Make Foo and Foo() both highlight as constants

Closes vim-ruby#210.

Author: justincampbell

syntax/ruby.vim

@@ -103,6 +103,8 @@ syn match  rubySymbol		"[]})\"':]\@<!:\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)
 syn region rubySymbol		start="[]})\"':]\@<!:'"  end="'"  skip="\\\\\|\\'"  contains=rubyQuoteEscape fold
 syn region rubySymbol		start="[]})\"':]\@<!:\"" end="\"" skip="\\\\\|\\\"" contains=@rubyStringSpecial fold
 
+syn match  rubyCapitalizedMethod	"\%(\%(^\|[^.]\)\.\s*\)\@<!\<\u\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)*\s*(\@="
+
 syn match  rubyBlockParameter	  "\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*" contained
 syn region rubyBlockParameterList start="\%(\%(\<do\>\|{\)\s*\)\@<=|" end="|" oneline display contains=rubyBlockParameter
 
@@ -336,6 +338,7 @@ hi def link rubyAccess			Statement
 hi def link rubyAttribute		Statement
 hi def link rubyEval			Statement
 hi def link rubyPseudoVariable		Constant
+hi def link rubyCapitalizedMethod	rubyLocalVariableOrMethod
 
 hi def link rubyComment			Comment
 hi def link rubyData			Comment