Merge pull request #703 from mredig/readmeGrammar

Readme grammar

README.md

@@ -11,7 +11,7 @@
 
 Crypto related functions and helpers for [Swift](https://swift.org) implemented in Swift. ([#PureSwift](https://twitter.com/hashtag/pureswift))
 
-**Note**: The `master` branch follows the latest currently released **version of Swift**. If you need an version for older version of Swift, you can specify it's version in your Podfile or use the code on the branch for that version. Older branches are unsupported. Check [versions](#swift-versions-support) for details.
+**Note**: The `master` branch follows the latest currently released **version of Swift**. If you need an earlier version for an older version of Swift, you can specify its version in your Podfile or use the code on the branch for that version. Older branches are unsupported. Check [versions](#swift-versions-support) for details.
 
 ---
 
@@ -217,7 +217,7 @@ CryptoSwift uses array of bytes aka `Array<UInt8>` as a base type for all operat
 
 ##### Data types conversion
 
-For you convenience **CryptoSwift** provides two functions to easily convert array of bytes to `Data` and another way around:
+For your convenience, **CryptoSwift** provides two functions to easily convert an array of bytes to `Data` or `Data` to an array of bytes:
 
 Data from bytes:
 
@@ -364,7 +364,7 @@ let decrypted = try Blowfish(key: key, blockMode: CBC(iv: iv), padding: .pkcs7).
 
 ##### AES
 
-Notice regarding padding: *Manual padding of data is optional, and CryptoSwift is using PKCS7 padding by default. If you need manually disable/enable padding, you can do this by setting parameter for __AES__ class*
+Notice regarding padding: *Manual padding of data is optional, and CryptoSwift is using PKCS7 padding by default. If you need to manually disable/enable padding, you can do this by setting parameter for __AES__ class*
 
 Variant of AES encryption (AES-128, AES-192, AES-256) depends on given key length:
 
@@ -470,7 +470,7 @@ do {
 }
 ```
 
-**Note**: GCM instance is not intended to be reused. So you can't use the `GCM` from encoding, do decoding.
+**Note**: GCM instance is not intended to be reused. So you can't use the same `GCM` instance from encoding to also perform decoding.
 
 ##### AES-CCM