ECOM-248 Course Info API. Basic functionality implemented.
ECOM-248 adding factory for about descriptor and test cases for course info api
ECOM-248 adding test cases for couse info api.
ECOM-248 re-factoring code. updating test cases.
Tests for course_about data module
ECOM-248 Adding test cases for the exceptions.
ECOM-248 re-factoring code. fixing quality issues.
ECOM-248 fixing test cases and moved parse video method into utils.
added github username in authors
ECOM-248 removed merging issue of test_data
ECOM-248 removed unused files
