docs: correctly represent the url and env vars that get injected via docker link

Closes #221

Author: josegonzalez

README.md

@@ -194,12 +194,12 @@ dokku postgres:link lolipop playground
 The following environment variables will be set automatically by docker (not on the app itself, so they won’t be listed when calling dokku config):
 
 ```
-DOKKU_DATABASE_LOLIPOP_NAME=/lolipop/DATABASE
-DOKKU_DATABASE_LOLIPOP_PORT=tcp://172.17.0.1:5432
-DOKKU_DATABASE_LOLIPOP_PORT_5432_TCP=tcp://172.17.0.1:5432
-DOKKU_DATABASE_LOLIPOP_PORT_5432_TCP_PROTO=tcp
-DOKKU_DATABASE_LOLIPOP_PORT_5432_TCP_PORT=5432
-DOKKU_DATABASE_LOLIPOP_PORT_5432_TCP_ADDR=172.17.0.1
+DOKKU_POSTGRES_LOLIPOP_NAME=/lolipop/DATABASE
+DOKKU_POSTGRES_LOLIPOP_PORT=tcp://172.17.0.1:5432
+DOKKU_POSTGRES_LOLIPOP_PORT_5432_TCP=tcp://172.17.0.1:5432
+DOKKU_POSTGRES_LOLIPOP_PORT_5432_TCP_PROTO=tcp
+DOKKU_POSTGRES_LOLIPOP_PORT_5432_TCP_PORT=5432
+DOKKU_POSTGRES_LOLIPOP_PORT_5432_TCP_ADDR=172.17.0.1
 ```
 
 The following will be set on the linked application by default:

subcommands/link

@@ -14,12 +14,12 @@ service-link-cmd() {
   #E the following environment variables will be set automatically by docker
   #E (not on the app itself, so they won’t be listed when calling dokku config):
   #E
-  #E     DOKKU_${PLUGIN_DEFAULT_ALIAS}_LOLIPOP_NAME=/lolipop/DATABASE
-  #E     DOKKU_${PLUGIN_DEFAULT_ALIAS}_LOLIPOP_PORT=tcp://172.17.0.1:${PLUGIN_DATASTORE_PORTS[0]}
-  #E     DOKKU_${PLUGIN_DEFAULT_ALIAS}_LOLIPOP_PORT_${PLUGIN_DATASTORE_PORTS[0]}_TCP=tcp://172.17.0.1:${PLUGIN_DATASTORE_PORTS[0]}
-  #E     DOKKU_${PLUGIN_DEFAULT_ALIAS}_LOLIPOP_PORT_${PLUGIN_DATASTORE_PORTS[0]}_TCP_PROTO=tcp
-  #E     DOKKU_${PLUGIN_DEFAULT_ALIAS}_LOLIPOP_PORT_${PLUGIN_DATASTORE_PORTS[0]}_TCP_PORT=${PLUGIN_DATASTORE_PORTS[0]}
-  #E     DOKKU_${PLUGIN_DEFAULT_ALIAS}_LOLIPOP_PORT_${PLUGIN_DATASTORE_PORTS[0]}_TCP_ADDR=172.17.0.1
+  #E     DOKKU_${PLUGIN_VARIABLE}_LOLIPOP_NAME=/lolipop/DATABASE
+  #E     DOKKU_${PLUGIN_VARIABLE}_LOLIPOP_PORT=tcp://172.17.0.1:${PLUGIN_DATASTORE_PORTS[0]}
+  #E     DOKKU_${PLUGIN_VARIABLE}_LOLIPOP_PORT_${PLUGIN_DATASTORE_PORTS[0]}_TCP=tcp://172.17.0.1:${PLUGIN_DATASTORE_PORTS[0]}
+  #E     DOKKU_${PLUGIN_VARIABLE}_LOLIPOP_PORT_${PLUGIN_DATASTORE_PORTS[0]}_TCP_PROTO=tcp
+  #E     DOKKU_${PLUGIN_VARIABLE}_LOLIPOP_PORT_${PLUGIN_DATASTORE_PORTS[0]}_TCP_PORT=${PLUGIN_DATASTORE_PORTS[0]}
+  #E     DOKKU_${PLUGIN_VARIABLE}_LOLIPOP_PORT_${PLUGIN_DATASTORE_PORTS[0]}_TCP_ADDR=172.17.0.1
   #E
   #E the following will be set on the linked application by default:
   #E