Simplify pubsub dev instructions

README.md

@@ -820,11 +820,10 @@ When using `Phoenix.PubSub` (which is typically the case with `Ecto`), then the
 
 Steps:
 
-1. Ensure you've cleared previously build artifacts with `rm -rf _build/dev/lib/fun_with_flags/`.
-2. Run `bin/console_ecto --name foo` in one terminal.
-3. Run `bin/console_ecto --name bar` in another terminal.
-4. In either terminal, grab the current name with `Node.self()`. (The name will also be shown in the `iex` prompts).
-5. In the other terminal, run `Node.connect(:"THE_OTHER_NODE_NAME")`. Keep in mind that the names are atoms.
-6. In either terminal, run `Node.list()` to check that there is a connection.
+1. Run `bin/console_pubsub foo` in one terminal.
+2. Run `bin/console_pubsub bar` in another terminal.
+3. In either terminal, grab the current name with `Node.self()`. (The name will also be shown in the `iex` prompts).
+4. In the other terminal, run `Node.connect(:"THE_OTHER_NODE_NAME")`. Keep in mind that the names are atoms.
+5. In either terminal, run `Node.list()` to check that there is a connection.
 
 Done that, modifying any flag data in either terminal will notify the other one via PubSub.

bin/console_ecto

@@ -6,4 +6,4 @@ rdbms=${1:-postgres}
 
 rm -rf _build/dev/lib/fun_with_flags/ &&
 rm -rf _build/test/lib/fun_with_flags/ &&
-PERSISTENCE=ecto RDBMS="$rdbms" PUBSUB_BROKER=phoenix_pubsub iex $@ -S mix;
+PERSISTENCE=ecto RDBMS="$rdbms" PUBSUB_BROKER=phoenix_pubsub iex -S mix;

bin/console_pubsub

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+nodename=${1:-one}
+
+# Support `$@` to pass extra options to `iex`.
+
+rm -rf _build/dev/lib/fun_with_flags/ &&
+rm -rf _build/test/lib/fun_with_flags/ &&
+PERSISTENCE=ecto RDBMS="postgres" PUBSUB_BROKER=phoenix_pubsub iex --name "$nodename" -S mix;