use meteor settings instead of custom source file

.gitignore

@@ -0,0 +1 @@
+settings.json

README.md

@@ -20,17 +20,19 @@ since the apps now depends on Meteor's
 
 #### Twitter Authentication
 
-Create this file: `server/settings.coffee` with this content:
+Create a `json` file with this content:
 
-```coffeescript
-Meteor.startup ->
-  Accounts.loginServiceConfiguration.remove service : 'twitter'
-  Accounts.loginServiceConfiguration.insert
-    service: 'twitter'
-    consumerKey: 'Your API key'
-    secret: 'Your API secret'
+```json
+{
+  "twitter" : {
+    "apiKey": "your_twitter_api_key",
+    "secret": "your_twitter_api_secret"
+  }
+}
 ```
 
+Now run or deploy the application with the `--settings yourfile.json` parameter.
+
 Your users will now be able to login using twitter. You may want to disable the
 button if you don't configure twitter authentication.
 

server/accounts.coffee

@@ -28,3 +28,11 @@ Accounts.emailTemplates.verifyEmail.text = (user,url) ->
   url = Meteor.absoluteUrl 'verify/'+token
   '''Welcome to MarkCloud! To activate your account, click on the \
   following link: '''+url
+
+# Twitter configuration code
+Meteor.startup ->
+  Accounts.loginServiceConfiguration.remove service : 'twitter'
+  if Meteor.settings.twitter? then Accounts.loginServiceConfiguration.insert
+    service: 'twitter'
+    consumerKey: Meteor.settings.twitter.apiKey
+    secret: Meteor.settings.twitter.secret