added documentation for client NFT setup

docs/nft/Bluzelle NFT Secure Storage API.md

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+# Bluzelle NFT Secure Storage API
+
+The bluzelle NFT API is a two step process.  
+
+* Upload the file (from the browser)
+* Notify the network that the file has been uploaded (from your application server)
+
+The second step is necessary so that your identity credentials can be kept secure while not requiring you to act as the middle man for the upload.  The file upload happens directly between the users browser and the Bluzelle Net.
+
+The process looks like this:
+
+![](./short protocol.png)
+
+### Step 1: Upload
+
+We have provided a helper function in our Bluzelle JS client library to aid with the upload.  You can use this code in your browser application.
+
+````typescript
+import {uploadNft} from 'bluzelle'
+uploadNft("https:...", data as Uint8Array, "your_org_id"))
+````
+
+
+
+**The url and org_id will be provided to you by Bluzelle.**
+
+### Step 2: Notify the network
+
+In order for the network to start replicating the uploaded file, it must be notified that the file has been uploaded.  We have created another helper function to aid you.
+
+```typescript
+bz.createNft(
+            id,                  // The id you want to assign to this file
+            hash,                // The hash of the file
+            vendor,              // Your organization id 
+            userId,              // Your id for the user that uploaded the file
+            mime,                // The mime type for this file
+            'metadata',          // Any arbritrary metadata you want to store for this file
+            gasParams)           // The gas parameters for the transaction (these will be provided to you)
+```
+
+### Creating a bluzelle client instance
+
+Instructions on how to install and use the bluzelle JS client is at https://github.com/bluzelle/blzjs
+