Removed hardcoded. Examples in Management for graph module
added crypto.hmac function
Added Upgrading to gitbook
Added more in-code documentation for the graph module
Merge branch 'devel' of github.com:triAGENS/ArangoDB into devel
Improved ordering and structure of the graph management documentation
Moved Vertex operations to Functions in graph module documentation
Merge branch 'devel' of github.com:triAGENS/ArangoDB into devel
return HMAC as hex
Moved list of all available graphs in the management documentation
Merge branch 'devel' of https://github.com/triAGENS/ArangoDB into devel