Rename hsvRGB to HSVtoRGB

This makes the function name consistent with HSVtoHex, as well as fix a
bug where the setFormat function was trying to invoke `HSVtoRGB`, but
the function was undefined.
Merge pull request #4 from bilalq/hsvrgb

Rename function hsvRGB to HSVtoRGB
Fix style inconsistencies & global leaks

Semi-colon usage was inconsistent. In the `pickHue` function, `hue` was
not declared as a var, so it was leaking into the global scope. The same
was true of `color` in the `getColorInfo` function.
Remove trailing whitespace