Merge pull request #46 from Mnw2212/master

Modified Docs
Added color coded errors
Merge remote-tracking branch 'origin/master'
Fixed execution backend error handling
New Original Icon Added
New Original Icon Added
Faster cache lookup: Composite Primary Key in db and redundant SHA removed.
Merge pull request #47 from jiajoe/master

Faster cache lookup: Composite Primary Key in db and redundant SHA removed
Fixed MedusaCache schema
Merge pull request #48 from jiajoe/master

Fixed MedusaCache schema
Merge pull request #49 from Mnw2212/master

modified docs
Added docstrings
Merge branch 'master' of https://github.com/rahul080327/medusa