Update README.md

Author: iainnash

README.md

@@ -25,6 +25,19 @@
 
 **Mumbai**: [0xb655386104f475c087b7460525a5676CaFc8b13f](https://mumbai.polygonscan.com/address/0xb655386104f475c087b7460525a5676CaFc8b13f)
 
+### How do I create a new edition?
+
+call `createEdition` with the given arguments to create a new editions contract:
+
+- Name: Token Name Symbol (shows in etherscan)
+- Symbol: Symbol of the Token (shows in etherscan)
+- Description: Description of the Token (shows in the NFT description)
+- Animation URL: IPFS/Arweave URL of the animation (video, webpage, audio, etc)
+- Animation Hash: sha-256 hash of the animation, 0x0 if no animation url provided
+- Image URL: IPFS/Arweave URL of the image (image/, gifs are good for previewing images)
+- Image Hash: sha-256 hash of the image, 0x0 if no image url provided
+- Edition Size: Number of this edition, if set to 0 edition is not capped/limited
+- BPS Royalty: 500 = 5%, 1000 = 10%, so on and so forth, set to 0 for no on-chain royalty (not supported by all marketplaces)
 
 ### How do I sell/distribute editions?