Update README.md

Author: rocky

README.md

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 # Armlet, a MythX API client wrapper
 
-Armlet is a thin wrapper around the MythX API written in Javascript. It simplifies interaction with MythX and [JWT authentication](https://jwt.io/introduction/). For example, the library wraps API analysis requests into a promise, merges status information with analysis-result information, and judiciously polls for results.
+Armlet is a thin wrapper around the [MythX API](https://api.mythx.io/v1/openapi) written in Javascript. It simplifies interaction with [MythX](https://mythx.io/) and [JWT authentication](https://jwt.io/introduction/). For example, the library wraps API analysis requests into a promise, merges status information with analysis-result information, and judiciously polls for results.
 
 A simple command-line tool, `mythx-analysis`, is provided to show how to use the API. It can be used to run MythX analyses on a single Solidity smart-contract text file.