Update documentation.

docs/index.md

@@ -50,29 +50,18 @@ If you are familiar with the original library, see: [The migration guide](Migrat
 
 Also see [Improvements_and_updates](Improvements_and_updates.md) for information about non-breaking changes.  
 
-### Arduino specific:
+### Arduino specific
 See the Refactored_original_examples in the examples folder for highlights of the differences with the original library.  
 
 More advanced examples highlighting many available features are in examples/NimBLE_Server, NimBLE_Client.  
     
 Beacon examples provided by [beegee-tokyo](https://github.com/beegee-tokyo) are in examples/BLE_Beacon_Scanner, BLE_EddystoneTLM_Beacon, BLE_EddystoneURL_Beacon.  
 
-Change the settings in the nimconfig.h file to customize NimBLE to your project, such as increasing max connections (default == 3).  
+Change the settings in the nimconfig.h file to customize NimBLE to your project, such as increasing max connections (default is 3).  
+<br/>  
 
-**Note To increase max connections in Arduino it is also required to change the controller max connections defined in sdkconfig.h.**  
-
-This is located in your Arduino/hardware/espressif/esp32/tools/sdk/include/config folder.
-
-The values in `sdkconfig.h` you will need to change are:  
-```
-#define CONFIG_BTDM_CONTROLLER_BLE_MAX_CONN 3  
-#define CONFIG_BTDM_CONTROLLER_BLE_MAX_CONN_EFF 3  
-```
-In `nimconfig.h` the value is:  
-```
-#define CONFIG_BT_NIMBLE_MAX_CONNECTIONS 3  
-```
-Espressif has stated the hard maximum connections is 9.  
+### Command line and platformio
+See the command line configuration options available in [Command_line_config](Command_line_config.md).  
 <br/>  
 
 # Acknowledgments