Moved from Test Unit to Rspec.
Upgraded to Ruby 2.1.1 and upgraded conflicting gems.
Added Subject Model and corresponding test along with factory implementation.
Added Subject Code to Subject Model.
Added Teacher Model.
Add respond to checks for teacher model.
Added Standard and Class Group.
Added GroupSubject which denotes linking between Subjects which a class group should have.
Linked Class Group to Subjects. Was some complex modeling phew :) .
Modeled Subject Standard which represents Subject of a parcticular Standard.
Modeled Teacher Subject Standard which represents linking between teacher and Subject of a particular Standard.
Linked Teacher and Subject Standards through teacher subject standards.
Updated schema as per current models.
Created Seed Task to pre populate Sample Data.
Merge branch 'schema-design'

Conflicts:
	Gemfile
Ignored idea project file as project can be imported using gem file.