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Merge pull request #127 from rrrene/patch-1

Add docs badge to README
RSpec 3.0.0 released [fixes the build], Mutant deactivated for now

Mutant is not compatible with RSpec 3.0.0 yet
Merge pull request #125 from triAGENS/rspec-3.0.0.rc1

RSpec 3.0.0 RC1 released [fixes the build]
Who needs so many instance variables? #89
Renamed Prima Donna method `check_if_persisted` #89
[Breaking Change] Document#refresh! is now Document#refresh #89

Another Prima Donna Method
Merge pull request #123 from triAGENS/reek

Some Reek suggestions incorporated (including a breaking change)
Always verify the constant names of verifying doubles
Clean up key_options_spec
Clean up usage of doubles in document_spec

* instance_double for the Database
* Remove unnecessary doubles
Clean up usage of doubles in configuration_spec

* Use an instance double of the Ruby logger as the logger double
* Use an instance double from our Connection
* Use real values for the other values, except the adapter
    * The adapter is an implementation detail of a dependency
Clean up usage of doubles in connection_spec
Clean up usage of doubles in cursor_spec
Clean up usage of doubles in edge_spec
Clean up usage of doubles in index_spec

unique is a 'Boolean' double, because I don't want to test both cases
separately and there is no boolean type in Ruby :wink:
Clean up usage of doubles in figure_spec

Removing the figures JSON by the way.
Clean up usage of doubles in exception_spec
Clean up usage of doubles in transaction_spec
Clean up usage of doubles in query_spec