Added maxTags property in a row

[moreakshay]

Added functionality to specify maximum number of tags in a row.

In earlier version when TagView's width was set to wrap_content it only showed 1 tag per line. which proved unproductive when used in any horizontal scrollable view.

In the above example maxTags is set to 2. Default is 0, which will render normal/default behavior

Notice how "Sudan" and "Suriname" is on next line even when there is space after their previous tag "Sri Lanka".

Note: since the user specifically wants said number of tags in one line it will draw the tag regardless it fits in the screen.

This property doesn't affect any other functionality of the project.

No major changes to the original code. code written/changed in drawTags() method. changed code lines are commented .