Go Template grammar

From GoSublime

ref #26
GoTemplate syntax highlighting in raw strings

https://github.com/DisposaBoy/GoSublime/commit/f2ffba8c07e9fd6039dbfa26bb8f49a3342e09ae
Go Template grammar derived from GoSublime
convert grammar for .gohtml fileType
Merge pull request #30 from nathany/gotemplate

Go Template grammar