Remove non-standard "type annotations"

Since we're not actually using Flow.

lib/cli.js

@@ -42,7 +42,7 @@ export default function() {
 function runServer(options) {
   
   // get all installed providers
-  let providers:Array<Provider> = Provider.installed();
+  let providers = Provider.installed(); // array of Provider
   
   // load and validate providers - check for valid package.json, etc.
   try {
@@ -60,7 +60,7 @@ function listInstalledProviders(options) {
 
 // Encapsulates configuring a provider via the command line.
 class CliProviderSetup {
-  constructor(providerName: string, options:object) {
+  constructor(providerName, options) {
     
     // if you didn't specify a provider, print help
     if (!providerName) {
@@ -88,8 +88,8 @@ class CliProviderSetup {
           console.log('');
           
           // apply configuration values entered by the user
-          for (let key:string in result) {
-            let value:object = result[key];
+          for (let key in result) {
+            let value = result[key];
             
             User.config.set(`${this.providerName}.${key}`, value);
           }
@@ -128,11 +128,11 @@ class CliProviderSetup {
   }
   
   // builds a "schema" obejct for the prompt lib based on the provider's config spec
-  buildPromptSchema(): object {
+  buildPromptSchema() {
     let properties = {};
     
-    for (let key:string in this.providerModule.config) {
-      let spec:object = this.providerModule.config[key];
+    for (let key in this.providerModule.config) {
+      let spec = this.providerModule.config[key];
       
       // do we have a value for this config key currently?
       let currentValue = User.config.get(`${this.providerName}.${key}`);