Reduced code

* Procedure name is now shorter, easier to remember
* RGB component variables have shorter names, easier to use
* Final RGB color is already formatted for Praat, easier to use
* Hex -> decimal is now a single line, instead of a complex if-block.
* Conversion of hex pair components to decimal values is now a single line
* Reduced number of internal variables and length of names in general
* Converted initial hex string to lowercase, for easier manipulation
Reduced code

* Procedure name is now shorter, easier to remember
* RGB component variables have shorter names, easier to use
* Final RGB color is already formatted for Praat, easier to use
* Hex -> decimal is now a single line, instead of a complex if-block.
* Conversion of hex pair components to decimal values is now a single line
* Reduced number of internal variables and length of names in general
* Converted initial hex string to lowercase, for easier manipulation
* Moved all color-procedures to the same file, so they can use each other.
* Separated tasks into three different procedures: `hex2rgb`, `rgb2praat`, and `hex2praat`
* Moved all color-procedures to the same file, so they can use each other.
* Separated tasks into three different procedures: `hex2rgb`, `rgb2praat`, and `hex2praat`
Merge branch 'jjatria-patch-2'
Corrected some bugs and modified comments
Adapted test scripts to newer version of procedures
Updated README
Some changes...
And yet more...
Removed one useless line.
Ignoring files...
Renaming files
Removing files
Added HSV support

* Added helper procedures hsv2rgb, rgb2hsv and hsv2praat

* Added rainbow procedure for automatic generaiton of color spaces. Distribution might need some more work.