Added unit test to demonstrate that autoloader is matching files not in this library due to partial-matching of the classname.

I couldn't think of a proper way to test this without actually introducing a class outside of the SendGrid namespace… perhaps someone smarter than me has some idea on how to write this test?

This is in preparation for the next commit, which will fix the autoloader.
Fixed autoloader as part of PR #33 so that autoloader only matches actual SendGrid classes.
Merge branch 'master' of github.com:kander/sendgrid-php into patch-1

# By Sander Bol (3) and scottmotte (3)
# Via Sander Bol (1) and Scott Motte (1)
* 'master' of github.com:kander/sendgrid-php:
  Fixed autoloader as part of PR #33 so that autoloader only matches actual SendGrid classes.
  Added unit test to demonstrate that autoloader is matching files not in this library due to partial-matching of the classname.
  Version bump 1.0.5
  Update README to reflect options to set hostname and port
  Add some additional tests and follow the format similar to the port
  Allow setting the hostname, in case you are using a local relay.

Conflicts:
	SendGrid_loader.php
Merge branch 'pr/33'