Corrected Muctache compatibility statement.

Currently handlebars in not compliant with Mustache and this should be accurately represented.
Update index.haml
Corrected Muctache compatibility statement.

Currently handlebars in not compliant with Mustache and this should be accurately represented.
Merge branch 'patch-1' of https://github.com/AshHeskes/handlebars-site into patch-1
Amended Mustache compatibility statement to remove a link to github issues.
Link to mustache compatibility docs
Merge branch 'AshHeskes-patch-1'