fix(docs): fixes methodOf declaration of addInterpolation method
chore(): updates ngdocs and configures gruntfile
docs(guide): nicer guide instructions
chore(): changes uglifiy task to generate files without version
docs(guide): fixes missing comma
docs(guide): updates installation guide

updates installation guide due to new introduced
angular-translate-interpolation-default service.
chore(): update ngdocs task to use interpolation script
docs(guide): updates getting started guide with nice example
chore(): updates gruntfile

introduces new task for documention.
now, doc assets get copied
docs(guide): adds image for coneptual overview
docs(guide): restrucre guide files

introduces new guide steps for filter, service an directive
WIP conceptual overview
docs(guide): restructure
docs(guide): documentation for conceptual overview
docs(guide): updates translate service guide
docs(guide): fixes example in getting started
docs(guide): updates translate filter documentation
docs(guide): updates directive guide
docs(guide): proper formatting
docs(guide): updates documentation for variable replacement
chore(grunt): updates docs task to include extensions