Lab41/Dendrite — pull request #42 by erickt (2013-12-21 01:07:00+00:00)
Title: External graphs

This PR adds support for external graphs. To create one, do:

```
curl \
-XPOST \
-H 'content-type: application/json' \
/api/projects//graphs \
-d '{
"properties":{
"storage.backend":"local",
"storage.directory": "/tmp/foo"
}
}'
```

It also does some minor cleanup, like fixing a race on opening graphs, corrects a typo in our example graph creation script, and finally allows `dendrite run-groovy` to print out the result of the script.