Add several scales in addition to the already included scales

When landing #30, these scales can be landed as well. I've included:

 - Blues scale `blues`
 - Flamenco `flamenco`
 - The harmonic minor `harmonicminor`
 - The melodic minor `melodicminor`
 - Double harmonic scale (not sure why... why not?) `doubleharmonic`

Along with this, I accidentally committed the `Jakefile` update which was meant to go to the master branch directly - oh well.

I'll pull this, when #30 gets pulled, probably later this week.