added the ability to coalesce with only a background color
Merge pull request #29 from adamralph/18

added the ability to coalesce with only a background color
Added foreground colortoken extensions #17
Added background color string extensions and changed background color extension method naming #16 and #25
Merge pull request #31 from davetimmins/background-color-methods

Added background color string extensions and changed background color ex...
Merge pull request #30 from davetimmins/foreground-colortokenextensions

Added foreground colortoken extensions #17