adding 'a Unix-like OS' as a requirement
throwing a bone to Windows users
adding a message of hope to Windows users, those poor souls...
adding a page describing the use of Synthesize, the install script
capitalizing UNIX, and unawkwardizing a phrase.
capitalizing the other UNIX
Merge pull request #837 from gwaldo/win-users

Windows Users and Synthesize
Adding missing period to document.
Merge pull request #839 from ojilles/master

Documentation updates for areaBetween, cactiStyle and reduceSeries
Documenting that you can use alpha values for colors in colorList and bgcolor.