Merge pull request #103 from gnosis/update-docs

Update v2.0.0 documentation

README.md

@@ -22,6 +22,7 @@ import CPK from 'contract-proxy-kit'
 * web3.js 1.2
 * web3.js 2.0 alpha
 * ethers.js 4.0
+* ethers.js 5.0
 
 ### CPK.create
 
@@ -93,6 +94,7 @@ const cpk = await CPK.create({
 
 Please refer to the `migrations/` folder of this package for information on how to deploy the required contracts on a network, and note that these addresses must be available for the connected network in order for *CPK* creation to be successful.
 
+<!---
 #### Transaction relayer configuration
 
 By default, the CPK will not use any transaction relayer. However, the [Safe Relay Service](https://github.com/gnosis/safe-relay-service) can be used to submit all the transactions when the optional property `transactionManager` is passed to the CPK constructor with an instance of the class `SafeRelayTransactionManager`.
@@ -108,9 +110,10 @@ const cpk = await CPK.create({
 The URL of the [Safe Relay Service](https://github.com/gnosis/safe-relay-service) is different depending on the network:
  - Mainnet: https://safe-relay.gnosis.io/
  - Rinkeby: https://safe-relay.rinkeby.gnosis.io/
-
+--->
 ### CPK#getOwnerAccount
 
+
 This may be used to figure out which account the proxy considers the owner account. It returns a Promise which resolves to the owner account:
 
 ```js
@@ -321,6 +324,16 @@ Run the tests against the local network:
 yarn test
 ```
 
+## Run your app as a Safe App
+
+*CPK* uses the [Safe Apps SDK](https://github.com/gnosis/safe-apps-sdk), making your app available to be run in an iframe inside the [Safe Web UI](https://gnosis-safe.io/).
+
+Once your app is ready to be deployed make sure to follow these [steps to run your app as a Safe app](https://github.com/gnosis/safe-apps-sdk#testing-in-the-safe-multisig-application). Apart from that, no extra configuration is needed.
+
+When running your app inside the *Safe Web UI*, the configuration used to instantiate the *CPK* will be ignored because the responsability to send transactions is now tranferred to the *Safe Web UI* and the wallet connected to it.
+
+If needed, the method `CPK.isSafeApp()` is available to check if the app using the *CPK* is running as a Safe app or not.
+
 ## In-depth Guide
 
 The Contract Proxy Kit operates primarily using the following technologies: