Merge pull request #13 from blackbooker/master

Removed old README file and tweaked copyright line
(Almost) fixing showhints by setting the scope on the config values

The issue that I was not able to fix was line 499 and 511 in Wiz.php —
for some reason $wiz->getArg() is not getting the arg and it makes me
go "ARRRRG" — fix that and this commit is golden!
Tweaked pull request to remove invalid var access and removed change of global values since they are not used: #14
Merge pull request #15 from kevinkirchner/master with additional modifications. Resolves issue #14.
Fixed Undefined offset Notice on line 72 when not passing a valid magento connect 2.0 package.
Improvements on validation of magento 2.0 modules. On Ubuntu for example, when typing http://... the  turns on 2 dimensions array because of the ':' sign that splits the url causing the wiz mc-dl error (not a valid magento 2.0 package).
Applied same fix that @r-martins did on mc-versions to the error report in mc-dl.
Resolves #17. Merge pull request from r-martins/master with minor modification to resolve same notice in mc-dl.