add rule that checks for assignments in while/if/.

fixes https://github.com/mozilla/scanjs/issues/130
my gitignore

-
Merge pull request #1 from mozilla/master

Update branch to mozilla
Merge pull request #2 from mozilla/master

merge from upstream
Add check for assignment in ifstatement

in progress for more rules
remove semi colon in testhit
use findNodeAt to recursively look for assignment
Add support for $_contains
Generalise Ifstatement matching with $_contains

fix a bug
Merge branch 'unintended-assignment' of https://github.com/codelion/scanjs into codelion-unintended-assignment
added support for $_unsafe
document $_unsafe in readme
re-add assignment typo rule
Merge branch 'codelion-unintended-assignment'