Extracted Status Class out of Collection
Extracted the Figure class from Collection
Refactoring of collection
Moved the existing exceptions and created two new ones #17

The Connection class now throws exceptions from the domain
instead of just passing on exceptions from RestClient.
Added Handling of indices not found #17
Refined README
Re-added Yard-Stick #15

* Dependency added
* Raketasks added
* Fixed all found problems except missing examples

Because of the missing examples, the coverage is not
100% - therefore the task was not added to the CI task.
This will be done as soon as I have added all the examples.
Updated Dependencies
Some clarifications on Contributing
Use secure protocol for Gemfile
Ignoring tmp folder
Replace magic values with constants

From @mbj's feedback
Introduce devtools
Add spec helper and prepare mutant
Sync devtools
Updated Flay and Flog thresholds
Update list of Rubies for Travis
Set durable rspec options
Gitignore /tmp and ignore repo relative root

Conflicts:
	.gitignore
Remove yard group from Guardfile for lower dev cycle latency