Remove OPF stuff in order to simply README instructions 

README should constain only "Get started" instructions.
Add CoordinateEncoder and GeospatialCoordinateEncoder
Clear output array in coordinate encoder before using it
Adding --coverage option to test runs.
Adding coveralls push to travis config.
Use assertTrue instead of assertGreater in tests
Fixed bash errors in travis config.
Use assertTrue instead of assertLess in tests
Using assertRaises as a function instead of context manager in tests
Merge pull request #1005 from chetan51/issue-988

Add CoordinateEncoder and GeospatialCoordinateEncoder
Merge pull request #1008 from rhyolight/add-coveralls-2

Adds coveralls support in Travis.
Header text updated after feedback
Downgraded info messages to debug as described in nupic/issues/857.
Merge pull request #1002 from DavidRagazzi/patch-2

Remove OPF stuff in order to simply README instructions
Merge pull request #1011 from baroobob/master

Downgraded info messages to debug as described in nupic/issues/857.
Added coveralls config.