Added comment.
Fixed unicode handling. Added passing of items between callback functions using the meta attribute.
Splitted method for parsing grades page.
Parsing of grades, work in progress.
Fixed 1-to-N problem by counting method executions.
Fixed 1-to-N problem by counting method executions.
Merge branch 'master' of https://github.com/prasopes/DTU-course-mining

Conflicts:
	scraper/scraper/spiders/coursespider.py
Renamed CourseRun module.
Removed dependencies on Scrapy Item from Course.
Updated README file.
Updated README file.
Merge branch 'master' of https://github.com/prasopes/DTU-course-mining

Conflicts:
	README.md
Updated model classes. Introduced storage package. Added tests for storage classes. Removed test package for now.
Fixed PEP 8 violations.
Added simple implementation of Storage.
Implemented __eq__ for CourseRun.
Updated JSONDecoder.
Added test for Course decoding.
Added Department class.
StaticStorage  exceptions instead of passes.