Updated code and dependencies, added HTTP flexibility

• Upgraded dependencies that were too old.
• Removed apigen, it was acting up and not that useful.
• Added some flexibility to allow for http client selection and request options change (e.g.: timeout).

Small bugfix

When an exception is risen, no check was made to make sure links were actually there.

Bugfix & technical improvements

Modifications kindly contributed by @lostfocus :

• Better error checking when json decode fails,
• opened private props for access in subsclass.

Bug fix

Correction to yesterday's buggy release.

Bug fix release

Bug fix from @nickshears.

Update to support newer versions of Buzz

Merge pull request #3 from lostfocus/master

Update to allow newer versions of Buzz to work, thanks to @lostfocus :) !