add gh mobile money and mpesa instructions to the readme

Author: biodunalfet

README.md

@@ -59,6 +59,8 @@ Set the public key, private key and other required parameters. The `RavePayManag
                         .setTxRef(txRef)
                         .acceptAccountPayments(boolean)
                         .acceptCardPayments(boolean)
+                        .acceptMpesaPayments(boolean)
+                        .acceptGHMobileMoneyPayments(boolean)
                         .onStagingEnv(boolean)
                         .allowSaveCardFeature(boolean)
                         .setMeta(List<Meta>)
@@ -79,6 +81,8 @@ Set the public key, private key and other required parameters. The `RavePayManag
 | setTxRef(txRef) | This is the unique reference, unique to the particular transaction being carried out. It is generated by the merchant for every transaction | `String` | Required
 | acceptAccountPayments(boolean) | Set to `true` if you want to accept payments via cards, else set to `false`. | `boolean` | Not Required
 | acceptCardPayments(boolean) | Set to `true` if you want to accept payments via bank accounts, else set to `false` | `boolean` | Not Required |
+| acceptMpesaPayments(boolean) | Set to `true` if you want to accept Mpesa payments, else set to `false` . For this option to work, you should set your country to `KE` and your currency to `KES` | `boolean` | Not Required |
+| acceptGHMobileMoneyPayments(boolean) | Set to `true` if you want to accept Ghana mobile money payments, else set to `false` . For this option to work, you should set your country to `GH` and your currency to `GHS`| `boolean` | Not Required |
 | onStagingEnv(boolean) | Set to `true` if you want your transactions to run in the staging environment otherwise set to `false`. Defaults to false  | `boolean` | Not Required
 | allowSaveCardFeature(boolean) | Set to `true` if you want your users to be able to save their cards for later reuse otherwise set to `false` | `boolean` | Required
 | setMeta(`List<Meta>`) | Pass in any other custom data you wish to pass. It takes in a `List` of `Meta` objects | List<Meta> | Not Required