Update README and change default variant to ganache

README.md

@@ -90,7 +90,13 @@ The [development stack page](https://github.com/poanetwork/blockscout/wiki/Devel
   `cd apps/block_scout_web/assets && npm install; cd -`  
   `cd apps/explorer && npm install; cd -`
 
-  7. Start Phoenix Server.  
+  7. Update your JSON RPC Variant in `apps/explorer/config/dev.exs` and `apps/indexer/config/dev.exs`.
+  For `variant`, enter `ganache`, `geth`, or `parity`
+
+  8. Update your JSON RPC Endpoint in `apps/explorer/config/dev/` and `apps/indexer/config/dev/`
+  For the `variant` chosen in step 7, enter the correct information for the corresponding JSON RPC Endpoint in `parity.exs`, `geth.exs`, or `ganache.exs`
+
+  9. Start Phoenix Server.  
   `mix phx.server`
 
 Now you can visit [`localhost:4000`](http://localhost:4000) from your browser.

apps/explorer/config/dev.exs

@@ -22,7 +22,7 @@ import_config "dev.secret.exs"
 
 variant =
   if is_nil(System.get_env("ETHEREUM_JSONRPC_VARIANT")) do
-    "parity"
+    "ganache"
   else
     System.get_env("ETHEREUM_JSONRPC_VARIANT")
     |> String.split(".")

apps/indexer/config/dev.exs

@@ -11,7 +11,7 @@ config :logger, :indexer_token_balances,
 
 variant =
   if is_nil(System.get_env("ETHEREUM_JSONRPC_VARIANT")) do
-    "parity"
+    "ganache"
   else
     System.get_env("ETHEREUM_JSONRPC_VARIANT")
     |> String.split(".")