improve README.md

README.md

@@ -1,6 +1,8 @@
 # Zcash iOS Framework
+A Zcash Lightweight Client SDK for iOS
 
-## Build dependencies
+
+# Build dependencies
 
 Install [Rust](https://www.rust-lang.org/learn/get-started), and then `cargo-lipo`:
 
@@ -8,3 +10,25 @@ Install [Rust](https://www.rust-lang.org/learn/get-started), and then `cargo-lip
 $ cargo install cargo-lipo
 $ rustup target add aarch64-apple-ios x86_64-apple-ios
 ```
+
+# Cocoapods Support
+
+```` ruby
+use_frameworks!
+
+pod 'ZcashLightClientKit' 
+````
+## Troubleshooting
+
+#### _function_name  referenced from...
+if you get a build error similar to ```_function_name  referenced from...``` 
+
+* on your project root directory *
+1. remove the 'Pods' directory ``` rm -rf Pods/```
+2. delete derived data and clean
+3. run ```pod install```
+4. build 
+
+
+# License 
+Apache License Version 2.0