ruby/rubygem-mustache: Wrap README at 72 columns.

Signed-off-by: B. Watson <yalhcru@gmail.com>

ruby/rubygem-mustache/README

@@ -1,3 +1,3 @@
-Mustache is a framework-agnostic way to render logic-free views.  It emphasizes 
-separating logic from presentation: it is impossible to embed application logic 
-in this template language.
+Mustache is a framework-agnostic way to render logic-free views.
+It emphasizes separating logic from presentation: it is impossible to
+embed application logic in this template language.