Added default template name based on underscorified class name. I.e. a class named FooBarBaz would try to load a template named foo_bar_baz.mustache in the current directory.
Added default template name based on underscorified class name. I.e. a class named FooBarBaz would try to load a template named foo_bar_baz.mustache in the current directory.

daffl/zfmustache,cgvarela/mustache.php,BrunoDeBarros/mustache.php,thecocce/mustache.php,zuluf/mustache.php,ericariyanto/mustache.php,irontec/mustache,evdevgit/mustache.php,sophatvathana/mustache.php,bobthecow/mustache.php