Fix indent after base and input tags

Closes #25.

indent/haml.vim

@@ -23,7 +23,7 @@ let s:attributes = '\%({.\{-\}}\|\[.\{-\}\]\)'
 let s:tag = '\%([%.#][[:alnum:]_-]\+\|'.s:attributes.'\)*[<>]*'
 
 if !exists('g:haml_self_closing_tags')
-  let g:haml_self_closing_tags = 'meta|link|img|hr|br'
+  let g:haml_self_closing_tags = 'base|link|meta|br|hr|img|input'
 endif
 
 function! GetHamlIndent()