Merge branch 'dev'
merged dev branch to allow read the docs build updated "Contributing" sections of the docs
initial take on travis-ci integration and nosetests integration
updated readme file to support travis-ci building badge
major change in package structure to comply with best of python library distributive practices
merging new package structure

Conflicts:
	tests/__init__.py
	tests/core/__init__.py
	tests/core/objects/__init__.py

Major changes in structure, as core package has been moved to grat package. all tests that were passing are passing at the moment
updated imports in tests to correctly handle new structure