create setup script

Author: Emiliasky

README.md

@@ -11,6 +11,8 @@ Not to be confused with [Tap](https://zeus.ugent.be/tap).
 6. Run `./bin/dev`
 7. Browse to [http://localhost:3000](http://localhost:3000)
 
+Or, run ./setup.sh and go to step 6.
+
 ## Adding clients
 
 A client can see and modify balances of other users.

setup.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+#exit on error
+set -e
+
+# keep track of the last executed command
+trap 'last_command=$current_command; current_command=$BASH_COMMAND' DEBUG
+# echo an error message before exiting
+trap 'echo "\"${last_command}\" command filed with exit code $?."' EXIT
+
+asdf install
+bundle
+yarn
+bundle exec rails db:setup
+bundle exec rails db:migrate
+bundle exec rails db:seed