Underline Pager Indicator can now be used with ViewPager having pages with widths less than 1.0f

Underline Pager Indicator can now be used with ViewPager having pages with widths less than 1.0f

Only look at the 246b33b commit. Disregard the other one.

The file UnderlinePageIndicator.java has changed so that it can 
support ViewPagers with pages whose width is less than 1.0f.

Also, a new method has been added called 'public void show(long timeOut)' 
which will show the indicator for the given amount of time (timeOut parameter).
This comes in handy when showing a ViewPager when the Activity is shown for
the first time, giving the user an indication of how many pages the ViewPager contains.