Update to FSRiver 0.3.0 (SSH Support)
With FSRiver 0.3.0, we can now fetch documents using [SSH](https://github.com/dadoonet/fsriver/issues/12).
Let's support it in scrutmydocs as well.

You can now create a new river using SSH:

sh
```
curl -XPUT 'localhost:8080/scrutmydocs/api/1/settings/rivers/fs/' -d '
{
	 "id" : "mydummyriver",
	 "name" : "My Dummy River",
	 "protocol" : "ssh",
	 "server" : "localhost",
	 "username" : "sshlogin",
	 "password" : "sshpassword",
	 "indexname" : "docs",
	 "typename" : "doc",
	 "start" : false,
	 "url" :"/tmp/docs",
	 "updateRate" : 300,
	 "includes" : "*.doc",
	 "excludes" : "resume*",
	 "analyzer" : "french"
}
' -H "Content-Type: application/json" -H "Accept: application/json"
```
Closes #68.