update gitignore
minor refactoring of fixtures
some refactoring
update tests and templates
make travis use node `0.10`
revert writeFlags back to verbose
moved liquid-ext.coffee into tasks/lib
fixes https://github.com/sirlantis/grunt-liquid/issues/1

This allows for the path to includes to be user-defined in the task options.
Merge pull request #2 from jonschlinkert/refactor

refactor task and gruntfile