improve readme docs

Author: billbsing

README.md

@@ -10,23 +10,28 @@ First you need to download the Convex-API-py package from the python package ind
 
     pip install convex-api
 
-You can now access the convex network using the following python commands.
+You can now access the convex network, and get a balance from an existing account on the network by doing the following:
 
     >>> from convex_api import ConvexAPI
     >>> convex = ConvexAPI('https://convex.world')
     >>> convex.get_balance('0x7E66429CA9c10e68eFae2dCBF1804f0F6B3369c7164a3187D6233683c258710f')
     524786120
 
-You can create a new account by doing the following:
+You can create a new emtpy account, with now balance:
 
     >>> from convex_api import Account
     >>> account = Account.create_new()
     >>> print(account.address_checksum)
-    0x6F0e5f252B31Dc78d460Dd301ab571F47f8Bb0d7557Afff8D26A12655Dc2F6aF    ```
+    0x6F0e5f252B31Dc78d460Dd301ab571F47f8Bb0d7557Afff8D26A12655Dc2F6aF
 
-You can request some funds to the new account and see the account information:
+You can request some funds to the new account and then get the account information:
 
     >>> convex.request_funds(1000000, account)
     1000000
     >>> convex.get_account_info(account)
     {'environment': {}, 'address': '6f0e5f252b31dc78d460dd301ab571f47f8bb0d7557afff8d26a12655dc2f6af', 'is_library': False, 'is_actor': False, 'memory_size': 8, 'balance': 1000000, 'allowance': 0, 'sequence': 0, 'type': 'user'}
+
+You can export the accounts private key encoded as PKCS8 encrypt the key with a password:
+
+    >>> account.export_to_text('secret')
+    '-----BEGIN ENCRYPTED PRIVATE KEY-----\nMIGbMFcGCSqGSIb3DQEFDTBKMCkGCSqGSIb3DQEFDDAcBAizl38718A38wICCAAw\nDAYIKoZIhvcNAgkFADAdBglghkgBZQMEASoEEGOHaBSsm8TSScgUSBK8pDAEQJCL\nMmES7ElmI+SB7xmfRdFq8Afh4FE9rhOsb6vSWlTkWcYDoZ8T4hYuZ9NDPJ/nNIsi\nh9Kwp0dVyN7SczuZqi0=\n-----END ENCRYPTED PRIVATE KEY-----\n'