use !== vs != since we dont want type conversion
Fixes Issue #72 and Issue #39 - Adds support for F keys

Provides support (and test) for the F keys 1-19 as described
on the homepage.

Signed-off-by: ciaranj <ciaranj@gmail.com>
Updates the makefile comment to explicitly suggest v1 of uglifyjs

The default uglifyjs package is now v2, this means that the generated
(minified) js looks very different to what was presumably intended
(based on the existing .min.js file)
Merge pull request #77 from ciaranj/add_f_key_support

Fixes Issue #72 and Issue #39 - Adds support for F keys
Merge pull request #78 from ciaranj/specify_uglifyjs_1

Updates the makefile comment to explicitly suggest v1 of uglifyjs
add unbindKey, abstract helpers for assign and unbind, update tests for unbind
add tests for unbind with scope
update docs for unbind
doc update - add unbind intro text
Merge pull request #79 from ryan-nauman/master

simple unbind and test updates
update minified version
Update README.markdown
fix global `mi` leak
Merge pull request #81 from ryan-nauman/master

simple unbind global leak fix
Merge pull request #71 from smdern/master

use !== vs != in test