Limit miniumum and maximum values

Limiting minimum value to 0 and maximum value to 100.
Converting 100 to settable max value
Enhanced flowing animation of progressbar

Using jquery.transit
Reverting transit back to animate

Supposing to use new branch for transit
Updated the documentation for progress bar

Added all options including new max option
Added maximum value for max option as 100
Limited min and max options
Code cleanup
Limiting o.min <= o.max
Merge pull request #460 from greensolid/develop

Enhancements to progress bar and slider