ms 0.7.2

Added license field to package.json file: https://github.com/zeit/ms/pull/42
Renamed long and short (reserved keywords): https://github.com/zeit/ms/pull/53
Capitalized important files: b2d9f9d
Specified version numbers for devDependencies in package.json: abd3616
Updated license file to the latest version: 5d53ae8
Only upload important files to npm, instead of excluding certain ones: 2b2f02a
Adjusted name of repository in package.json: e84f95d
Made the package description match the repo's: 3961c12
Added details on how to contribute: 201c805 and 73f34c3
Fixed the description in README.md: 171f287
Updated component file with the latest data: https://github.com/zeit/ms/issues/45
Proper structure for README.md: f95bf41
Replaced HISTORY.md with Github Releases: 4002de0
Removed Makefile in favor of npm scripts: beff285
The main test file is now called "index.js": 4dd33d7
Started testing in Travis CI: e1066db, 2458287 and 32063f2
Added XO as a linting tool: https://github.com/zeit/ms/pull/64 and d0ddfbb
Now throwing an error if value is invalid: https://github.com/zeit/ms/pull/52
Added examples for converting years: https://github.com/zeit/ms/pull/63