Update README.md

Author: donchev7

README.md

@@ -5,14 +5,14 @@ This library has zero depdendencies.
 
 We used it in our [sepa-form-recogizer](https://neurocode.io/blog/sepa-payment-recognizer?s=github) API
 
-## Whats a SAS token?
+## What is a SAS token?
 
 ![sas](./sas-storage-uri.png)
 
 
-SAS token is a string that you generate on give your client for temp access to your Azure storage. The Azure Storage client library does not work in the browser since it uses NodeJS crypto to compute the HMAC SHA256.
+SAS token is a string that you generate and give your client for temp access to your Azure storage. The Azure Storage client library does not work in the browser since it uses NodeJS crypto to compute the HMAC SHA256.
 
-This library uses webCrypto to compute the HMAC SHA and is thus compatible with cloudflare workers.
+This library uses webCrypto to compute the HMAC SHA256 and is thus compatible with cloudflare workers.
 
 
 ## Install
@@ -41,7 +41,7 @@ const { blobSasUrl } = await createBlobSas({
 
 ```
 
-Be careful with **startsOn** property. If you set the start time for a SAS to the current time, you may observe failures occurring intermittently for the first few minutes due to different machines having slight variations the current time (known as clock skew). 
+Be careful with **startsOn** property. If you set the start time for a SAS to the current time, you may observe failures occurring intermittently for the first few minutes due to different machines having slight variations of the current time (known as clock skew). 
 
 In general, set the start time to be at least 15 minutes in the past. Or, don't set it at all :)