Grayscale function overrides native CSS filter grayscale

[KyleNeedham]

The grayscale function definiton in _functions overrides the native CSS grayscale function. This means that anywhere you do filter: grayscale(100) it is set to a HEX value, which of course does not work.

Perhaps instead of naming it graysacle we could name it gray?

[XhmikosR]

/CC @mdo

[chibuzoro]

Had the same problem, wonder if there is work around to this without directly modifying the bootstrap _function.scss definition. But that's the option I'm left with.

[KyleNeedham]

@byteworksng You can do #{'grayscale(100)'}. Works fine, although I hope this will be updated for future releases.

[chibuzoro]

@KyleNeedham Thanks a lot... It works now.