Bolt.css: add

Closes #23.

README.md

@@ -16,6 +16,7 @@ This is a list of classless CSS themes and frameworks.  "Classless" means a styl
     + [Bamboo CSS](#bamboo-css)
     + [BareCSS](#barecss)
     + [Basic.css](#basiccss)
+    + [Bolt.css](#boltcss)
     + [Classless.css](#classlesscss)
     + [concrete.css](#concretecss)
     + [Downstyler](#downstyler)
@@ -130,6 +131,14 @@ This is a list of classless CSS themes and frameworks.  "Classless" means a styl
 [![basic.css.png](thumbnail/basic.css.png)](screenshot/basic.css.png)
 
 
+### Bolt.css
+
+* [Repository](https://github.com/tbolt/boltcss) ![GitHub stars](https://img.shields.io/github/stars/tbolt/boltcss?style=flat-square) ![GitHub contributors](https://img.shields.io/github/contributors-anon/tbolt/boltcss?style=flat-square) ![Last commit](https://img.shields.io/github/last-commit/tbolt/boltcss?style=flat-square) ![GitHub open issues](https://img.shields.io/github/issues-raw/tbolt/boltcss?style=flat-square) ![GitHub closed issues](https://img.shields.io/github/issues-closed-raw/tbolt/boltcss?style=flat-square)
+* [Demo](https://boltcss.com/)
+
+[![bolt.css.png](thumbnail/bolt.css.png)](screenshot/bolt.css.png)
+
+
 ### Classless.css
 
 * [Repository](https://github.com/emareg/classlesscss) ![GitHub stars](https://img.shields.io/github/stars/emareg/classlesscss?style=flat-square) ![GitHub contributors](https://img.shields.io/github/contributors-anon/emareg/classlesscss?style=flat-square) ![Last commit](https://img.shields.io/github/last-commit/emareg/classlesscss?style=flat-square) ![GitHub open issues](https://img.shields.io/github/issues-raw/emareg/classlesscss?style=flat-square) ![GitHub closed issues](https://img.shields.io/github/issues-closed-raw/emareg/classlesscss?style=flat-square)

data/classless/bolt.css/demo

@@ -0,0 +1 @@
+https://boltcss.com/

data/classless/bolt.css/github

@@ -0,0 +1 @@
+tbolt/boltcss

data/classless/bolt.css/name

@@ -0,0 +1 @@
+Bolt.css

data/classless/bolt.css/screenshots

@@ -0,0 +1 @@
+bolt.css.png