redirect npm install's stderr to stdout

bin/compile

@@ -74,10 +74,10 @@ if test -d $cache_dir; then
 fi
 
 status "Installing dependencies"
-npm install --production | indent
+npm install --production 2>&1 | indent
 
 status "Pruning unused dependencies"
-npm prune | indent
+npm prune 2>&1 | indent
 
 status "Caching node_modules for future builds"
 rm -rf $cache_dir

bin/test

@@ -59,7 +59,8 @@ testProfileCreated() {
 
 testInvalidDependency() {
   compile "invalid-dependency"
-  assertCapturedError 1 "not in the npm registry"
+  assertCaptured "not in the npm registry"
+  assertCapturedError 1 ""
 }
 
 testNodeModulesCached() {