Merge pull request #155 from jeet-parekh/neo4j-docs

add docs for neo4j adaptor

docs/appbase/import.md

@@ -22,6 +22,9 @@ At the time of writing, the list of parameters supported looks like -
 --src_filter=.*                              Namespace filter for source
 --src_type=postgres                          type of source database
 --src_uri=http://user:pass@host:port/db      url of source database
+--src_username="username"                    username for source connection
+--src_password="password"                    password for source connection
+--src_realm="realm"                          realm for source connection
 --sac_path=./ServiceAccountCredentials.json  Path to the service account credentials file obtained after creating a firebase app.
 --tail=false                                 allow tail feature
 --test=false                                 if set to true, only pipeline is created and sync is not started. Useful for checking your configuration

docs/importer/adaptors/neo4j.md

+# Neo4J adaptor
+
+The Neo4J adaptor reads data from a Neo4J database.
+
+Here is how a configuration file looks like-
+
+```ini
+src_type=neo4j
+src_uri=bolt://localhost:7687
+src_username=username
+src_password=password
+src_realm=realm
+
+dest_type=elasticsearch
+dest_uri=https://USERID:PASS@scalr.api.appbase.io/APPNAME
+```
+
+For the destination URI, instead of using your user-id and password, you could also use your admin API key.
+
+```
+https://admin-API-key@scalr.api.appbase.io/APPNAME
+```
+
+You can find your admin API key inside your app page at appbase.io under Security -> API Credentials.
+
+The adaptor would fetch all the nodes and relationships from the graph database.
+
+Example usage:
+
+```
+abc import \
+--src_type=neo4j \
+--src_uri="bolt://localhost:7687" \
+--src_username=neo4j \
+--src_password=test \
+"http://localhost:9206/some_index"
+```