Increased delta page limit

Not sure, if it fixes anything, but let's try it!
Fix timestamps, added check to "get"

Fixed timestamps, replaced "touch -d" with os.utime, which works on
Windows. If file already exists, check if Dropbox copy is newer than
local. Removed syncfolder command, which was unused anyway.
Add progress to delta

Prints "Current entry: progress/total" while parsing delta entries.
Introduce Windows support, update readme

As Orphilia mostly works on Windows anyway, why not remove references
about it being unsupported? :)