(chore): Add a COMMIT file with commit rules

Author: Georgi Neykov

COMMIT.md

@@ -0,0 +1,87 @@
+# Commit Format
+
+The commit format follows a pattern similar to the [AngularJS commit message conventions](https://docs.google.com/document/d/1QrDFcIiPjSLDn3EL15IJygNPiHORgU1_OOAqWjiDU5Y/edit)
+
+
+## Why it's needed
+
+* allow changelog file generation
+* allow for a common, structured way of communicating changes
+* allow for filtering commits by category
+
+## Commit message format
+
+```
+[type]([scope]): [subject]
+[New line]
+[body]
+```
+
+Each line of the commit message should not exceed 100 characters to allow easier reading on smaller screens.
+
+### Subject line
+The Subject line contains a summarized description of the change.
+
+#### Allowed `<type>`
+* feat (feature)
+* fix (bug fix)
+* docs (documentation)
+* style (formatting, missing semi colons, …)
+* refactor
+* test (when adding missing tests)
+* chore (maintain)
+
+#### Allowed `<scope>`
+Scope could be anything specifying the place of the commit change. Build, Parsing, File operations, etc...
+
+#### `<subject>` text
+* use imperative, present tense: “change” not “changed” nor “changes”
+* don't capitalize first letter
+* no dot (.) at the end
+
+### Message body
+* just as in <subject> use imperative, present tense: “change” not “changed” nor “changes”
+* includes motivation for the change and contrasts with previous behavior
+
+http://365git.tumblr.com/post/3308646748/writing-git-commit-messages
+http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html
+
+Examples
+--------
+```
+feat($browser): onUrlChange event (popstate/hashchange/polling)
+
+Added new event to $browser:
+- forward popstate event if available
+- forward hashchange event if popstate not available
+- do polling when neither popstate nor hashchange available
+```
+
+```
+fix($compile): couple of unit tests for IE9
+
+Older IEs serialize html uppercased, but IE9 does not...
+Would be better to expect case insensitive, unfortunately jasmine does
+not allow to user regexps for throw expectations.
+```
+
+```
+feat(directive): ng:disabled, ng:checked, ng:multiple, ng:readonly, ng:selected
+
+New directives for proper binding these attributes in older browsers (IE).
+Added coresponding description, live examples and e2e tests.
+```
+
+```
+style($location): add couple of missing semi colons
+```
+
+```
+docs(guide): updated fixed docs from Google Docs
+
+Couple of typos fixed:
+- indentation
+- batchLogbatchLog -> batchLog
+- start periodic checking
+- missing brace
+```