Merge pull request #51 from averted/es6-interpolation

Adding basic ES6 string interpolation

Author: jelera

syntax/javascript.vim

@@ -182,6 +182,11 @@ syntax match javaScriptOpSymbols    "=\{1,3}\|!==\|!=\|<\|>\|>=\|<=\|++\|+=\|--\
 syntax match javaScriptEndColons    "[;,]"
 syntax match javaScriptLogicSymbols "\(&&\)\|\(||\)"
 "}}}
+" ES6 String Interpolation
+syntax match  javaScriptTemplateDelim    "\${\|}" contained
+syntax region javaScriptTemplateVar      start=+${+ end=+}+                        contains=javaScriptTemplateDelim keepend
+syntax region javaScriptTemplateString   start=+`+  skip=+\\\(`\|$\)+  end=+`+     contains=javaScriptTemplateVar,javaScriptSpecial keepend
+"}}}
 " JavaScriptFold Function {{{
 
 function! JavaScriptFold()