No more jshint errors for jquery.colorhelpers.js
Allow custom stroke color for points.
reverted null check
Added a .jshintrc for the Travis JSHint step.
Update JSHint pattern to include colorhelpers.
Added missing radix parameters.
Removed trailing whitespace.
Added missing semicolons.
Removed unnecessary semicolons.
Replace ternary with a simpler or statement.
Updated docs with the point strokeColor option.
Updated credits for #1003 strokeColor option.
Remove trailing white-space.
Convert single-quoted strings to double-quotes.
Wrap one-statement if and for blocks in braces.
Fix mixed spaces and tabs.
Fix lines incorrectly broken before an operator.
Add timezoneJS to the JSHint allowed globals.

We trust that jquery.flot.time.js checks for timezoneJS's existence
before using it.
Updated credits for threshold above operator.
Tweak Travis test target to omit dependencies.