Merge pull request #46 from Azure-Samples/v-jaswel-patch-1

Update "try Cognitive Services for free" link

README.md

@@ -50,7 +50,7 @@ This project framework provides examples for the following services:
     npm install
     ```
 
-1. Get a cognitive services API key with which to authenticate the SDK's calls. [# here](https://azure.microsoft.com/en-us/services/cognitive-services/directory/) by navigating to the right service and acquiring an API key. You can get a trial key for **free** which will expire after 30 days.
+1. Get a cognitive services API key with which to authenticate the SDK's calls. [Create a new Azure account, and try Cognitive Services for free.](https://azure.microsoft.com/free/cognitive-services/)
 
 1. Set the following environment variables using the information from the service principle that you created. You only need to set the environment variables for which you want to run the samples.