Merge branch 'develop' into feature/platformio-30

* develop:
  Update docs for Teensy USB Features // Issue #722
  Implement Teensy 2.0 USB functionality (HID, SERIAL_HID, DISK, MIDI, etc.) // Resolve #722
  Add support for Pinoccio Scout board // Resolve #52
  Fix broken LD Script for Element14 chipKIT Pi board // Resolve #725  Resolve #726
  Fix USB flags processing for teensy platform // Issue #722
  Add Pinoccio board // Issue #52
  Minor improvements for CLion docs
  Improved docs for integration with CLion IDE
  Version bump to 2.11.1 (issues #472, #629, #710, #711, #712, #713, #718)
  Typo fix
  Add "udev" rules for OpenOCD CMSIS-DAP adapters // Resolve #718
  Update history
  Ignore "[platformio]" section from custom project configuration CI
  Bump to 2.11.1b1
  Add Arduino M0 Pro and Tian to the examples // Issue #472
  Fix issue when `pioenvs` folder doesn't exist
  Add more info about `.pioenvs` directory
  Improve CMSIS selection for SAMD21 boards
  Improve support for SAMD21 based boards
  Add contributing guidelines

platformio/builder/tools/pioupload.py

@@ -39,15 +39,12 @@ def FlushSerialBuffer(env, port):
 def TouchSerialPort(env, port, baudrate):
     port = env.subst(port)
     print "Forcing reset using %dbps open/close on port %s" % (baudrate, port)
-    if system() != "Windows":
-        try:
-            s = Serial(port)
-            s.close()
-        except:  # pylint: disable=W0702
-            pass
-    s = Serial(port=port, baudrate=baudrate)
-    s.setDTR(False)
-    s.close()
+    try:
+        s = Serial(port=port, baudrate=baudrate)
+        s.setDTR(False)
+        s.close()
+    except:  # pylint: disable=W0702
+        pass
     sleep(0.4)