Build library as part of developing (#216)

We have to do this as we're now only importing the edm build as per #209

CONTRIBUTING.md

@@ -14,6 +14,8 @@ $ bin/test
 $ bin/test_system
 ```
 
+You can optionally pass the path to a specific test.
+
 ## Running the dummy app
 
 ```bash

Procfile.dev

@@ -0,0 +1,2 @@
+web: bin/rails server -b '0.0.0.0' -p 3033
+js: yarn build --watch

bin/dev

@@ -1,2 +1,7 @@
 #!/usr/bin/env bash
-bin/rails s
+if ! gem list foreman -i --silent; then
+  echo "Installing foreman..."
+  gem install foreman
+fi
+
+exec foreman start -f Procfile.dev "$@"

bin/test

@@ -1,2 +1,8 @@
 #!/usr/bin/env bash
-bundle exec rake app:test
+yarn build
+
+if [ $# -eq 0 ]; then
+  bundle exec rake app:test
+else
+  bundle exec rails test "$@"
+fi

bin/test_system

@@ -1,2 +1,8 @@
 #!/usr/bin/env bash
-bundle exec rake app:test:system
+yarn build
+
+if [ $# -eq 0 ]; then
+  bundle exec rake app:test:system
+else
+  bundle exec rails test "$@"
+fi