Prompt to create bootstrap.json

.gitignore

@@ -4,3 +4,4 @@
 *.egg-info
 /persistent
 /runtime
+bootstrap.json

run.sh

@@ -16,6 +16,10 @@ if [ "$#" -gt 2 ]; then
     exit 1
 fi
 
+if ! [ -f "bootstrap.json" ]; then
+    echo "Please create bootstrap.json from bootstrap.json.sample"
+    exit 1
+fi
 
 if [ -f "`which brew`" ]; then
     echo "Homebrew is installed"