Make sourceMap sources paths relative to the sourceMap file location.
Add description to init git submodule
Update devDependencies
Merge pull request #397 from watilde/add-desc-submodule

Add description to init git submodule
Merge pull request #398 from watilde/update-devDependencies

Update devDependencies
Option: Omit source mapping url from output file.
Addresses #380.
Merge pull request #396 from am11/omit-comments-gh#380

Option: Omit source mapping url from output file (#380)
Merge pull request #344 from timrwood/fix-source-map-urls

Make sourceMap sources paths relative to the sourceMap location.
Updated nan to v1.3.0
Cache npm dependencies on travis