Improve doc & bump version to dev (ops)
diff --git a/DESCRIPTION b/DESCRIPTION
index e522975..0a4d476 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: kableExtra
 Type: Package
 Title: Construct Complex Table with 'kable' and Pipe Syntax
-Version: 0.5.1
+Version: 0.5.1.9000
 Authors@R: c(
     person('Hao', 'Zhu', email = 'haozhu233@gmail.com', role = c('aut', 'cre')),
     person('Timothy', 'Tsai', role = 'ctb'),