Change delta calculation in mousewheel handler.

The new version of jquery-mousewheel's delta values are changed,
and should use the new calculation for the values.
Avoid the 'divide by zero' problem in bindMobileTouchHandler.
Fixed typo in CSS: missing space in "-webkit-transition:background-color.2s linear".
Additional typo fix for the patch below.
Don't scroll by keyevent while form element has focus
Fix delta calculation in mouswheel handler

Remove division by 10, makes scrolling slower than in previous versions.
Reverts 88d286957766e981a4f4c720f213164fc0f3f099
update readme
CommonJS compatibility
create bower json and ignore bower_components directory
Add an 'Install' section in README.md
Add 'includePadding' option (use container outerWidth/outerHeight instead of width/head)
Add a description for the 'includePadding' option in README.md
Update README.md
Use strict mode for function scopes.

Global strict mode is problematic when the script is concatenated
with non-strict scripts.
Fix scrolling within nested scrollable DIVs.

Fixes https://github.com/noraesae/perfect-scrollbar/issues/101
Merge pull request #124 from strichter/master

Fix scrolling within nested scrollable DIVs.