Create multi-account.md (PokemonGoF#639)

someone make it better if you want

docs/extras/multi-account.md

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+# Using Multiple Accounts
+
+PokemonGo-Map supports using multiple accounts to run a worker with multiple threads.
+
+
+## Using Command Line Arguments:
+
+To use multiple accounts when running from the command line, you must specify multiple -u and -p values.  
+Example: ![](http://thunderfox.nl/sharex/ym9wqVkdgo.png)
+
+If you have multiple accounts with the same password, you can specify one -p value. PokemonGo-Map will use the value for all specified accounts.  
+Example: ![](http://thunderfox.nl/sharex/0D87g662Kb.png)
+
+## Using config.ini
+
+To use multiple accounts with config.ini, you must surround all the accounts and passwords in brackets [] and seperate them with a comma and space.  
+Example: ![](http://thunderfox.nl/sharex/AgAA51omos.png)
+
+If you have multiple accounts with the same password, you can specify one password value similar to the command line.
+Example: ![](http://thunderfox.nl/sharex/7DCL90Mtht.png)