Merge pull request #117 from BTS-CM/master

Update README.md

README.md

@@ -255,8 +255,9 @@ Libraries capable of communicating with the BitShares blockchain.
 * [Telegram notifier](https://github.com/Codaone/BitShares-Telegram-notifier) - a simple bitshares telegram notifier
 * [bts-notifier](https://github.com/scientistnik/bts-notifier) - Telegram bot for sending BitShares account notifications
 * [PoolTool](https://github.com/iamredbar/PoolTool) - A simple GUI tool to help anyone use Liquidity Pools on the BitShares blockchain.
-* [Bitshares_NFT_Issuance_Tool](https://github.com/BTS-CM/Bitshares_NFT_Issuance_Tool) - A GUI to help users issue new NFTs on the Bitshares blockchain.
-* [NFT_Viewer](https://github.com/BTS-CM/NFT_Viewer) - A GUI to view NFTs on the Bitshares blockchain. 
+* [Bitshares_NFT_Issuance_Tool](https://github.com/BTS-CM/Bitshares_NFT_Issuance_Tool) - An open source GUI to help users issue new NFTs on the Bitshares blockchain.
+* [NFT_Viewer](https://github.com/BTS-CM/NFT_Viewer) - An open source GUI to view NFTs on the Bitshares blockchain. 
+* [Airdrop tool](https://github.com/bts-cm/airdrop_tool) - An open source GUI for fetching tickets, analyzing ticket leaderboards, calculating airdrop vectors and performing airdrops.   
 * [BTS-QRCodes](https://github.com/BTS-CM/BTS-QRCodes) - QR code generation scripts for Bitshares blockchain operations.
 * [BEET-JS](https://github.com/bitshares/beet-js) - A JS library for 3rd party apps to interact with the Bitshares BEET multiwallet.
 * [BEET-Deeplinks](https://github.com/BTS-CM/beet-deeplinks) - A module for constructing Bitshares BEET deeplinks.