diff --git a/README.md b/README.md
index 3ecf948..95f9e6c 100644
--- a/README.md
+++ b/README.md
@@ -4,11 +4,11 @@
 
 ***
 
-When we are talking about table generators in R, knitr::kable wins lots of flavor by its ultimate simplicity. Unlike those powerful table rendering engines such as `xtable`, the philosophy behind kable is to make it easy for programmers to use. Just as it claimed in its function description, 
+When we are talking about table generators in R, [knitr](https://yihui.name/knitr/)'s `kable()` function wins lots of flavor by its ultimate simplicity. Unlike those powerful table rendering engines such as [`xtable`](https://CRAN.R-project.org/package=xtable), the philosophy behind [`knitr::kable()`](https://rdrr.io/cran/knitr/man/kable.html) is to make it easy for programmers to use. Just as it claimed in its function description, 
 
 > This is a very simple table generator. It is simple by design. It is not intended to replace any other R packages for making tables. - Yihui
 
-However, the ultimate simplicity of `kable()` also brought troubles to some of us, especially for new R users, who may not have a lot of experience on generating tables in R. It is not rare to see people including experienced users asking questions like how to center/left-align a table on Stack Overflow. Also, for me personally, I found myself repeatedly parsing CSS into `kable()` for some very simple features like striped lines. For LaTeX, it's even worse since I'm almost Stack Overflow dependent for LaTeX... That's why this package `kableExtra` was created. 
+However, the ultimate simplicity of `kable()` also brought troubles to some of us, especially for new R users, who may not have a lot of experience on generating tables in R. It is not rare to see people including experienced users asking questions like how to center/left-align a table on Stack Overflow. Also, for me personally, I found myself repeatedly parsing CSS into `kable()` for some very simple features like striped lines. For LaTeX, it's even worse since I'm almost Stack Overflow dependent for LaTeX... That's why this package `kableExtra` was created.
 
 I hope with `kableExtra`, you can
 
@@ -24,10 +24,10 @@
 
 ## Features
 ### Pipable syntax
-`kableExtra` is NOT a table generating package. It is a package that can **"add features"** to a `kable()` output using a syntax that every useR loves - the pipes `%>%`. We see similar approaches to deal with plots in packages like `ggvis` and `plotly`. There is no reason why we cannot use it with tables. 
+`kableExtra` is NOT a table generating package. It is a package that can **"add features"** to a `kable()` output using a syntax that every useR loves - the pipes `%>%`. We see similar approaches to deal with plots in packages like `ggvis` and `plotly`. There is no reason why we cannot use it with tables.
 
 ### Unified functions for both HTML and PDF
-Most functionalities in `kableExtra` can work in both HTML and PDF. In fact, as long as you specifies format in `kable()` (which can be set globally through option `knitr.table.format`), functions in this package will pick the right way to manipulate the table be themselves. As a result, if users want to left align the table, `kable(...) %>% kable_styling(position = "left")` will work in both HTML and PDF. 
+Most functionalities in `kableExtra` can work in both HTML and PDF. In fact, as long as you specifies format in `kable()` (which can be set globally through option `knitr.table.format`), functions in this package will pick the right way to manipulate the table be themselves. As a result, if users want to left align the table, `kable(...) %>% kable_styling(position = "left")` will work in both HTML and PDF.
 
 ## Install
 ```r
@@ -45,18 +45,18 @@
 
 # HTML table
 kable(dt, format = "html", caption = "Demo Table") %>%
-  kable_styling(bootstrap_options = "striped", 
+  kable_styling(bootstrap_options = "striped",
                 full_width = F) %>%
   add_header_above(c(" ", "Group 1" = 2, "Group 2[note]" = 2)) %>%
   add_footnote(c("table footnote"))
 
 # LaTeX Table
 kable(dt, format = "latex", booktabs = T, caption = "Demo Table") %>%
-  kable_styling(latex_options = c("striped", "hold_position"), 
+  kable_styling(latex_options = c("striped", "hold_position"),
                 full_width = F) %>%
   add_header_above(c(" ", "Group 1" = 2, "Group 2[note]" = 2)) %>%
   add_footnote(c("table footnote"))
-  
+
 ```
 ### Results
 <img src="http://i.imgur.com/0e2b4P3.png" height="200" />
@@ -65,13 +65,13 @@
 ## More Information
 For more information, please check the package vignette.
 
-- [Create Awesome HTML Table with knitr::kable and kableExtra](http://haozhu233.github.io/kableExtra/awesome_table_in_html.html)
-- [Create Awesome LaTeX Table with knitr::kable and kableExtra](http://haozhu233.github.io/kableExtra/awesome_table_in_pdf.pdf)
+- [Create Awesome HTML Table with `knitr::kable()` and kableExtra](http://haozhu233.github.io/kableExtra/awesome_table_in_html.html)
+- [Create Awesome LaTeX Table with `knitr::kable()` and kableExtra](http://haozhu233.github.io/kableExtra/awesome_table_in_pdf.pdf)
 
 ## Limitations/Known bug
 - When you are using `header-includes` together with `kableExtra`, you cannot use inline R codes in `header-includes`. R code written in there won't be executed. It's a limitation of the current setup of `rmarkdown`.
-- In HTML, `bootstrap_options` in `kable_styling` assumes you to have bootstrap 3 style sheet loaded to have all features functioning. 
-- `add_header_above` and `add_footnote` should be able to work in any conditions but if you are using `kable_styling` in customed templates it can get a little tricky. 
+- In HTML, `bootstrap_options` in `kable_styling` assumes you to have bootstrap 3 style sheet loaded to have all features functioning.
+- `add_header_above` and `add_footnote` should be able to work in any conditions but if you are using `kable_styling` in customed templates it can get a little tricky.
 - In LaTeX, it is known that striped lines is not working with tufte handout since right now I cannot insert a latex package to its LaTeX header. You need to load required latex packages by yourself.
 
 ## To-do