fixing integration test

fixing duplicate obj files.

1. fixing missing dep for Python 2.7

2. updating MANIFEST to try fix source tarball uploaded to pip.

improving docs.

minor version bump

Fixing broken travis/appveyor to proper test memory-leaks nmslib#398

Merge branch 'master' of github.com:nmslib/nmslib

bumping up the version.

Bumping up version

bumping up NMSLIB version