Added Shelly Cloud on the PaaS list.

README.md

@@ -225,6 +225,7 @@ Table of Contents
   * http://azure.microsoft.com/ - MS Azure gives $200 worth of free usage for a trial
   * http://hpcloud.com/ - $300 credit over 90 days.
   * https://appharbor.com/ - A .Net PaaS that provides 1 free worker
+  * https://shellycloud.com/ - Platform for hosting Ruby and Ruby on Rails apps. Shelly Cloud gives €20 free credit
   * https://www.heroku.com/ - Host your apps in the cloud, free for single process apps
   * https://www.firebase.com/ - Build realtime apps, free plan has 50 Max Connections, 5 GB Data Transfer, 100 MB Data Storage. 1 GB Hosting Storage and 100 GB Hosting Transfer.
   * https://bluemix.net/ - IBM PaaS with a monthly free allowance
@@ -250,7 +251,7 @@ Table of Contents
   * https://layer.com/ - The full-stack building block for communications.
   * https://www.parse.com - Mobile backends, free plan has 30 requests per second, with 20 GB of file and database storage, as well as push notifications for up to 1,000,000 unique recipients.
   * http://quickblox.com/ - A communication backend for instant messaging, video and voice calling, and push notifications
-  
+
 ## Web Hosting
 
   * https://www.simplybuilt.com - SimplyBuilt offers free website building and hosting for open source projects (http://www.simplybuilt.com/explore/free-websites-for-open-source-projects). Simple alternative to GitHub Pages.
@@ -326,7 +327,7 @@ Table of Contents
    * https://www.cine.io - Scalable video broadcasting and p2p real-time video chat for iOS, Android, and web. Free tiers available for developers.
 
 ## Data Visualization on Maps
-   
+
    * http://gogeo.io/ - Maps and geospatial services with an easy to use API and support for big data
    * https://cartodb.com - Create maps and geospatial APIs from your data and public data.
    * http://www.giscloud.com - Visualize, analyze and share geo data online.
@@ -347,7 +348,7 @@ Table of Contents
    * https://wakatime.com - quantified self metrics about your coding activity, using text editor plugins - Limited plan for free.
    * https://codenvy.com/ - IDE in a browser, collaborative, git integration, build and run your app in customizable Docker-based runners (free 512Mb RAM to distribute between you runners), pre-integrated deploy to Google Apps.
    * https://apiary.io/ - Collaborative design API with instant API mock and generated documentation (Free for unlimited API blueprints and unlimited user with one admin account and hosted documentation)
-   * https://www.mockable.io/ - Mockable is a simple configurable service to mock out RESTful API or SOAP web-services. This online service allows you to quickly define REST API or SOAP endpoints and have them return JSON or XML data.   
+   * https://www.mockable.io/ - Mockable is a simple configurable service to mock out RESTful API or SOAP web-services. This online service allows you to quickly define REST API or SOAP endpoints and have them return JSON or XML data.
    * https://www.jetbrains.com/products.html - Productivity tools, IDEs and deploy tools. Free license for students, teachers, open source projects, and user groups.
    * https://readme.io/ - Beautiful documentations made easy - free for Open Source
    * https://www.visualstudio.com/en-us/products/visual-studio-community-vs.aspx - Visual Studio. Not only for Windows and .NET