Format: <type>(<scope>): <subject>

<scope> is optional
Example

feat: add hat wobble
^--^  ^------------^
|     |
|     +-> Summary in present tense.
|
+-------> Type: chore, docs, feat, fix, refactor, style, or test.

More Examples:

    feat: (new feature for the user, not a new feature for build script)
    fix: (bug fix for the user, not a fix to a build script)
    docs: (changes to the documentation)
    style: (formatting, missing semi colons, etc; no production code change)
    refactor: (refactoring production code, eg. renaming a variable)
    test: (adding missing tests, refactoring tests; no production code change)
    chore: (updating grunt tasks etc; no production code change)