Update README.md

README.md

@@ -20,13 +20,6 @@ This is a port of [Grbl](https://github.com/gnea/grbl) for the ESP32. The ESP32
 - **Fast Boot** - Boots almost instantly and does not need to be formally shutdown (unlike Raspberry Pi or Beagle Bone)
 - **RTOS (Real Time operating System)** - Custom features can be added without affecting the performance of the motion control system.
 
-### Issues / Changes
-
-1. **Direction pin delay** - Not implemented yet. Some drivers require a couple of microseconds after the direction pin is set before you start the step pulse. The original plan was to [use the RMT feature](http://www.buildlog.net/blog/?s=rmt), but that has issues when trying to use it in an Interrupt.  **This is typically a option in Grbl that is not used.**
-2. **Limit Switch debouncing** is not supported yet. It does not seem to be a problem on my test rigs. The dev board uses R/C filters on all inputs.
-3. **Step Pulse Invert:** This has not been fully tested. I suggest...leaving $2=0
-
-
 
 ### Using It
 
@@ -36,16 +29,6 @@ I use the ESP32 Dev Module version of the ESP32. I suggest starting with that if
 
 For basic instructions on using Grbl use the [gnea/grbl wiki](https://github.com/gnea/grbl/wiki). That is the Arduino version of Grbl, so keep that in mind regarding hardware setup. If you have questions ask via the GitHub issue system for this project.
 
-Be sure you have external pullup resistors on any GPIO34-39 that you use. These default to door, start, hold and reset functions.
-
-Using Bluetooth:
-
-- [See the Wiki page](https://github.com/bdring/Grbl_Esp32/wiki/Using-Bluetooth)
-
-Using SD Card
-
-- [See this wiki page](https://github.com/bdring/Grbl_Esp32/wiki/Using-the-SD-Card)
-
 ### Roadmap
 
 The roadmap is now [on the wiki](https://github.com/bdring/Grbl_Esp32/wiki/Development-Roadmap).