list similar apps, move ReadMe content to wiki

[IzzySoft]

• new method parseSimilar() lists what Google considers "similar apps"
• removed content from ReadMe that has been moved to wiki
• added links to ReadMe on what can be found on which wiki page
• added short description on method listing to ReadMe

Wiki update for the new method on its way. Ready for merge at your convenience.

[BaseMax]

Ready for review, then push? or still in working?

[BaseMax]

Awesome. parseSimilar )

[BaseMax]

Thank you Izzy.

[IzzySoft]

Want "other apps by author" (parseOthers($packageName)) as well, if available?

What I'm a bit unsure about: on those methods returning a list, which approach do you prefer on failure:

• returning [success:0, message:reason] instead (and if so, include success:1 with a "good result?
• simply returning an empty array, and have a getLastError() method for obtaining the reason?

For lists, the latter would make parsing easier (and you can ask "Why???" on empty(result). Would probably be good if we handle that the same way consistently – where distinguishing between "details on X" (parseApplication, parsePerms) and "list of X" would IMHO be OK.