Merge tag 'v0.2.0'

v0.2.0
Relax error message checks

Monkey-patch npm-registry-client `request` method to include http status
code in the error object.

Modify `install` end-to-end tests to check 404 status code and ignore
error message, because the message may differ between registry
implementations.
Merge pull request #10 from strongloop/feature/relax-error-message-checks

Relax error message checks
lib/npm-exec: fix windows issues

Remove string concatenation with path.sep where possible.

Simplify the algorithm for finding the root directory of the npm module.
Merge pull request #11 from strongloop/feature/fix-windows

lib/npm-exec: fix windows issues
v0.2.1
Merge branch 'release/0.2.1' into production