Add note about namespaced context classes with example
Update index.rst
Merge pull request #37 from Bendihossan/namespaced-context-config

Add note about namespaced context classes with example
Update quick_intro_pt1.rst
Update 1.gherkin.rst
Update 2.definitions.rst
Update 3.hooks.rst
Update 4.contexts.rst
Update 5.suites.rst
Update 6.profiles.rst
Merge pull request #38 from ciaranmcnulty/v3.0

English corrections
Added section about definitions browsing