Fix variadic parameter
Merge pull request #69 from mopemope/fix-variadic

Fix variadic parameter
Updates AUTHORS file
SetHTTPTemplate -> SetHTMLTemplate
Splitting source code in different files
Merge pull request #70 from fmd/develop-templates

Renames SetHTTPTemplate to SetHTMLTemplate
Adds context.File(path)
Refactors Static() file serving
Adds HEAD method in Static file serving
Renames NotFound404 to NotFound
Renames NotFound() to NoRoute()
Improves performance of NoRouter() handler
Performance improvement

- Reduces number of allocations per context
- Improves CPU cache usage
Errors in context are removed
Fixes new NoRoute() logic