Add support to customize font-weight on WhToggleButton

[geaaru]

Hi, I added on my fork a minor changes to permit customize of the font-weight on toggle button directly from WhToggleButton class.
In the next future could be a valid idea change this patch to permit a custom array of key-values for set every css property of the span tag.

Hereinafter link to commit:
geaaru@24db6da

Said me if could be correct merge this patch to master.

Thanks

geaaru

[tonydspaniard]

seems fine to me @geaaru

[geaaru]

Perfect... so what is the next step ? :)
I'm a newbie of github merge/fork so... I must create a pull request ?

Thanks

[tonydspaniard]

Make sure your project is updated with latest changes and create a pull request