Added request, collection and folder models
Adding the Logging Class, minor modifications for npm & README.
!== instead of !(variable)
removed redundant return this
Added a helpers module
Filled the isValidURL stub with simple regex"
Style change and inclusing of URL input to the executable
Added a parent class for models
Refactored models to inherit from parent class
Filled stubs in Request Marshaller
Fixed for Vigi's PR comments
Merge pull request #5 from prakhar1989/master

Added request, collection and folder models, cool stuff!