update README

Author: seanlinsley

README.md

@@ -1,6 +1,6 @@
 # Arbre - HTML Views in Ruby
 
-Arbre makes it easy to generate HTML directly from Ruby. This gem was extracted from [Active Admin](https://github.com/gregbell/active_admin).
+Arbre makes it easy to generate HTML directly in Ruby. This gem was extracted from [Active Admin](https://github.com/gregbell/active_admin).
 
 [![Version  ](http://img.shields.io/gem/v/arbre.svg)                 ](https://rubygems.org/gems/arbre)
 [![Travis CI](http://img.shields.io/travis/gregbell/arbre/master.svg)](https://travis-ci.org/gregbell/arbre)