Fix for issue #78

[digitalbias]

Pull request for issue #78. Handles empty error messages from the server on 4xx..500 errors.

[maxdemarzi]

Thanks!

[shamshul2007]

while trying to run the app https://github.com/neo4j-contrib/neo4j-heroku-seeds/tree/master/ruby/sinatra-neography
i am getting following error .please guide

sham@sham-HP:~/Desktop/neo4j-heroku-seeds-master/ruby/sinatra-neography$ ruby graphapp.rb
Awesome! Neo4j is available at http://localhost:7474
/var/lib/gems/1.9.1/gems/neography-1.0.9/lib/neography/connection.rb:150:in handle_4xx_500_response': Neography::NeographyError from /var/lib/gems/1.9.1/gems/neography-1.0.9/lib/neography/connection.rb:112:inevaluate_response'
from /var/lib/gems/1.9.1/gems/neography-1.0.9/lib/neography/connection.rb:37:in get' from /var/lib/gems/1.9.1/gems/neography-1.0.9/lib/neography/rest/nodes.rb:28:inroot'
from /var/lib/gems/1.9.1/gems/neography-1.0.9/lib/neography/rest.rb:67:in get_root' from graphapp.rb:34:increate_graph'
from graphapp.rb:58:in `

'

[maxdemarzi]

It's telling you that you don't have a root node for this graph. Stop Neo4j, find your neo4j directory, delete data/graph.db, start neo4j, try it again.