Add aynonomous option

.gitignore

@@ -1 +1,2 @@
 node_modules
+npm-debug.log

lib/index.js

@@ -5,6 +5,7 @@ const dict = require('./dict');
 const stop = 'stop';
 const start = 'start';
 const summary = 'summary';
+const anonymous = 'anonymous';
 const aliases = {
   stop,
   end: stop,
@@ -15,6 +16,9 @@ const aliases = {
   begin: start,
   summary,
   sum: summary,
+  anonymous,
+  incognito: anonymous,
+  hide: anonymous,
   version: require('../package.json').version,
 };
 
@@ -28,6 +32,7 @@ const types = {
 let bot;
 const token = process.env.SLACK_TOKEN;
 let inRetro = false;
+let isAnonymous = false;
 let guid = 0;
 
 let dms = {};
@@ -152,7 +157,7 @@ function handleMessage(message) {
 
   if (isDM(message)) {
     debug('> got retrospective message: %s', message.text);
-    // capture the rerto data
+    // capture the retro data
     return captureRetrospective(message);
   } else if (isToBot(text)) {
     debug('> got potential command: %s', message.text);
@@ -182,6 +187,10 @@ function captureRetrospective(message) {
     return reply(message,
       `I've ignored \`${line}\` only because it didn't start with a \`+/-\``);
   }
+
+  if (isAnonymous){
+    message.user = bot.self.id;
+  }
 
   retrospective[type][message.ts] = {
     user: message.user,
@@ -214,7 +223,9 @@ function getRetroParticipants(token, channel, callback) {
 
 function command(message) {
   let [me, cmd, ...rest] = message.text.split(' ');
-  cmd = cmd.toLowerCase().replace(/\W/g, '');
+  if (cmd){ // make sure there is something in cmd before doing .toLowerCase
+    cmd = cmd.toLowerCase().replace(/\W/g, '');
+  }
 
   debug('command: %s', cmd);
 
@@ -236,6 +247,22 @@ function command(message) {
     return;
   }
 
+  if (cmd === anonymous) {
+    if (isAnonymous){
+      isAnonymous = false;
+      return reply(message, ':male-detective: anonymous retrospective mode disabled');
+    }
+    else{
+      if(inRetro){
+        isAnonymous = true;
+        return reply(message, 'The remaining items for this retro will be taken and reported anonymously.');
+      }
+      isAnonymous = true;
+      let msg = ':male-detective: anonymous retrospective mode enabled';
+      return reply(message, msg);
+    }
+  }
+
   if (aliases[cmd] === start) {
     if (inRetro) {
       return reply(message, 'Another channel is currently using your friendly neighbourhood retrobot. Please try again later.');