Graph: Refactored graph instantiation
Collection: Added deprecation for `create_edge`
EdgeCollection: Added basic implementation
Faraday: Handle gharial specific 404 correctly
The graph object is nested in the response
Graph: Initialize orphan and edge collections with non nil
Graph: Added #delete method
Graph: Adding edge definition
Graph: Get a single edge collection from the database
EdgeCollection: Adding directed relations
EdgeCollection: Return edges on #add method
EdgeCollection: Overwrite #send_request_for_this_collection to use gharial
Collection: Extracted method to build the content class
Edge: Allow passing a graph
EdgeCollection: Added #remove (by example)
Graph: Added #neighbors method
Fixed typos in documentation
Made the Hound happy
Documentation: Don't call it 'gharial' in the docs
EdgeCollection: Add edges one by one, instead of bulks