* develop: (21 commits)
Use stable docs
Version bump to 2.11.2 (issues #500, #533, #732, #731, #737, #733, #438, #722, #52, #725)
Update project configuration template
Use stable docs
Implement firmware merging with base firmware for Nordic nRF51 development platform // Resolve#500 , Resolve#533
Fix firmware uploading to Atmel SAMD21-XPRO board using ARM mbed framework // Resolve#732
Add firmware merging process for nordicnrf51 // Issue #533, #500
Add OpenOCD as an alternative upload method for atmelsam platform // Issue #732
Sync flags parser with PlatformIO 3.0 branch // Resolve#738
Update ``udev`` rules for the new STM32F407DISCOVERY boards // Resolve#731
Add explanation about "Failed to find MSBuild toolsets directory"
Add support for local "--echo" for Serial Port Monitor // Resolve#733
Update history
Improve support for Microchip PIC32 development platform and ChipKIT boards // Resolve#438
Fix Project Generator for ESP8266 and ARM mbed based projects
Switch to gcc-built LwIP library for espressif platform
Push 2.11.2.dev2
Fix linking process for microchippic32 platfrom // Issue #438
Improve Project Generator for PlatformIO IDE (fixes incorrect linter errors)
