Add web front-end and fix API issues

node_modules/tree-kill/cli.js

@@ -0,0 +1,14 @@
+#!/usr/bin/env node
+kill = require('.')
+try {
+  kill(process.argv[2], process.argv[3], function(err){
+    if (err) {
+      console.log(err.message)
+      process.exit(1)
+    }
+  })
+}
+catch (err) {
+  console.log(err.message)
+  process.exit(1)
+}