chore: have test.sh take platform argument

Author: mhevery

test.sh

@@ -2,9 +2,17 @@
 
 set -e -o pipefail
 
-cd `dirname $0`
-export NODE_PATH=$NODE_PATH:$(pwd)/dist/all:$(pwd)/dist/tools
-$(npm bin)/tsc -p tools
-node dist/tools/tsc-watch/ node watch
-# node dist/tools/tsc-watch/ browser watch
-# node dist/tools/tsc-watch/ tools watch
+if [ $# -eq 0 ]
+  then
+    echo "Angular test runner. (No platform specified)"
+    echo
+    echo "./test.sh [node|browser|tools]"
+    echo
+else
+  cd `dirname $0`
+  export NODE_PATH=$NODE_PATH:$(pwd)/dist/all:$(pwd)/dist/tools
+  $(npm bin)/tsc -p tools
+  node dist/tools/tsc-watch/ $1 watch
+fi
+
+