diff --git a/docs/use_kableExtra_with_formattable.html b/docs/use_kableExtra_with_formattable.html
index 70b29d3..1dff26c 100644
--- a/docs/use_kableExtra_with_formattable.html
+++ b/docs/use_kableExtra_with_formattable.html
@@ -11,7 +11,7 @@
 
 <meta name="author" content="Hao Zhu" />
 
-<meta name="date" content="2017-10-16" />
+<meta name="date" content="2017-10-17" />
 
 <title>Use kableExtra with formattable</title>
 
@@ -119,7 +119,7 @@
 
 <h1 class="title toc-ignore">Use kableExtra with formattable</h1>
 <h4 class="author"><em>Hao Zhu</em></h4>
-<h4 class="date"><em>2017-10-16</em></h4>
+<h4 class="date"><em>2017-10-17</em></h4>
 
 </div>
 
@@ -571,183 +571,6 @@
 </tr>
 </tbody>
 </table>
-<pre class="r"><code>mtcars %&gt;%
-  tidyr::gather(var, value) %&gt;%
-  group_by(var) %&gt;%
-  summarise(
-    mean = mean(value),
-    sd = sd(value),
-    sparkline = list(sparkline::sparkline(value))
-  ) %&gt;%
-  ungroup() %&gt;%
-  mutate(
-    stat = paste0(mean, &quot; (&quot;, sd, &quot;)&quot;),
-    stat = cell_spec(stat, color = spec_color(mean))
-  ) %&gt;%
-  select(var, stat, sparkline) %&gt;%
-  kable(&quot;html&quot;, escape = F) %&gt;%
-  kable_styling(full_width = F)</code></pre>
-<pre><code>## Setting cell_spec format as html</code></pre>
-<table class="table" style="width: auto !important; margin-left: auto; margin-right: auto;">
-<thead>
-<tr>
-<th style="text-align:left;">
-var
-</th>
-<th style="text-align:left;">
-stat
-</th>
-<th style="text-align:left;">
-sparkline
-</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td style="text-align:left;">
-am
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(68, 1, 84, 1);">
-0.40625 (0.498990917235846)
-</div>
-</td>
-<td style="text-align:left;">
-1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 20, 60, 60, 20, 60, 20, 0, 0, 0, 1
-</td>
-</tr>
-<tr>
-<td style="text-align:left;">
-carb
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(69, 5, 89, 1);">
-2.8125 (1.61519997763185)
-</div>
-</td>
-<td style="text-align:left;">
-4, 4, 1, 1, 2, 1, 4, 2, 2, 4, 4, 3, 3, 3, 4, 4, 4, 1, 2, 1, 1, 2, 2, 4, 2, 1, 2, 2, 4, 6, 8, 2, 20, 60, 60, 20, 60, 20, 0, 0, 0, 1
-</td>
-</tr>
-<tr>
-<td style="text-align:left;">
-cyl
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(70, 10, 93, 1);">
-6.1875 (1.78592164694654)
-</div>
-</td>
-<td style="text-align:left;">
-6, 6, 4, 6, 8, 6, 8, 4, 4, 6, 6, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 8, 8, 8, 8, 4, 4, 4, 8, 6, 8, 4, 20, 60, 60, 20, 60, 20, 0, 0, 0, 1
-</td>
-</tr>
-<tr>
-<td style="text-align:left;">
-disp
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(253, 231, 37, 1);">
-230.721875 (123.938693831382)
-</div>
-</td>
-<td style="text-align:left;">
-160.0, 160.0, 108.0, 258.0, 360.0, 225.0, 360.0, 146.7, 140.8, 167.6, 167.6, 275.8, 275.8, 275.8, 472.0, 460.0, 440.0, 78.7, 75.7, 71.1, 120.1, 318.0, 304.0, 350.0, 400.0, 79.0, 120.3, 95.1, 351.0, 145.0, 301.0, 121.0, 20.0, 60.0, 60.0, 20.0, 60.0, 20.0, 0.0, 0.0, 0.0, 1.0
-</td>
-</tr>
-<tr>
-<td style="text-align:left;">
-drat
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(70, 7, 90, 1);">
-3.5965625 (0.534678736070971)
-</div>
-</td>
-<td style="text-align:left;">
-3.90, 3.90, 3.85, 3.08, 3.15, 2.76, 3.21, 3.69, 3.92, 3.92, 3.92, 3.07, 3.07, 3.07, 2.93, 3.00, 3.23, 4.08, 4.93, 4.22, 3.70, 2.76, 3.15, 3.73, 3.08, 4.08, 4.43, 3.77, 4.22, 3.62, 3.54, 4.11, 20.00, 60.00, 60.00, 20.00, 60.00, 20.00, 0.00, 0.00, 0.00, 1.00
-</td>
-</tr>
-<tr>
-<td style="text-align:left;">
-gear
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(70, 7, 90, 1);">
-3.6875 (0.737804065256947)
-</div>
-</td>
-<td style="text-align:left;">
-4, 4, 4, 3, 3, 3, 3, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 4, 4, 4, 3, 3, 3, 3, 3, 4, 5, 5, 5, 5, 5, 4, 20, 60, 60, 20, 60, 20, 0, 0, 0, 1
-</td>
-</tr>
-<tr>
-<td style="text-align:left;">
-hp
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(42, 176, 127, 1);">
-146.6875 (68.5628684893206)
-</div>
-</td>
-<td style="text-align:left;">
-110, 110, 93, 110, 175, 105, 245, 62, 95, 123, 123, 180, 180, 180, 205, 215, 230, 66, 52, 65, 97, 150, 150, 245, 175, 66, 91, 113, 264, 175, 335, 109, 20, 60, 60, 20, 60, 20, 0, 0, 0, 1
-</td>
-</tr>
-<tr>
-<td style="text-align:left;">
-mpg
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(72, 32, 113, 1);">
-20.090625 (6.0269480520891)
-</div>
-</td>
-<td style="text-align:left;">
-21.0, 21.0, 22.8, 21.4, 18.7, 18.1, 14.3, 24.4, 22.8, 19.2, 17.8, 16.4, 17.3, 15.2, 10.4, 10.4, 14.7, 32.4, 30.4, 33.9, 21.5, 15.5, 15.2, 13.3, 19.2, 27.3, 26.0, 30.4, 15.8, 19.7, 15.0, 21.4, 20.0, 60.0, 60.0, 20.0, 60.0, 20.0, 0.0, 0.0, 0.0, 1.0
-</td>
-</tr>
-<tr>
-<td style="text-align:left;">
-qsec
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(72, 28, 110, 1);">
-17.84875 (1.78694323609684)
-</div>
-</td>
-<td style="text-align:left;">
-16.46, 17.02, 18.61, 19.44, 17.02, 20.22, 15.84, 20.00, 22.90, 18.30, 18.90, 17.40, 17.60, 18.00, 17.98, 17.82, 17.42, 19.47, 18.52, 19.90, 20.01, 16.87, 17.30, 15.41, 17.05, 18.90, 16.70, 16.90, 14.50, 15.50, 14.60, 18.60, 20.00, 60.00, 60.00, 20.00, 60.00, 20.00, 0.00, 0.00, 0.00, 1.00
-</td>
-</tr>
-<tr>
-<td style="text-align:left;">
-vs
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(68, 1, 84, 1);">
-0.4375 (0.504016128774185)
-</div>
-</td>
-<td style="text-align:left;">
-0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 20, 60, 60, 20, 60, 20, 0, 0, 0, 1
-</td>
-</tr>
-<tr>
-<td style="text-align:left;">
-wt
-</td>
-<td style="text-align:left;">
-<div style="color: rgba(69, 5, 89, 1);">
-3.21725 (0.978457442989697)
-</div>
-</td>
-<td style="text-align:left;">
-2.620, 2.875, 2.320, 3.215, 3.440, 3.460, 3.570, 3.190, 3.150, 3.440, 3.440, 4.070, 3.730, 3.780, 5.250, 5.424, 5.345, 2.200, 1.615, 1.835, 2.465, 3.520, 3.435, 3.840, 3.845, 1.935, 2.140, 1.513, 3.170, 2.770, 3.570, 2.780, 20.000, 60.000, 60.000, 20.000, 60.000, 20.000, 0.000, 0.000, 0.000, 1.000
-</td>
-</tr>
-</tbody>
-</table>