add installation instructions

remove need to set programmer

Conflicts:
	README.md
	arduino-core/src/processing/app/Serial.java
	esp8266com/esp8266/boards.txt
	hardware/esp8266com/esp8266/programmers.txt

Conflicts:
	esp8266com/esp8266/boards.txt
	esp8266com/esp8266/variants/esp01/pins_arduino.h
	hardware/esp8266com/esp8266/variants/esp01/pins_arduino.h
	hardware/esp8266com/esp8266/variants/generic/pins_arduino.h

Conflicts:
	hardware/esp8266com/esp8266/cores/esp8266/Client.h
	hardware/esp8266com/esp8266/cores/esp8266/IPAddress.h
	hardware/esp8266com/esp8266/cores/esp8266/Printable.h
	hardware/esp8266com/esp8266/cores/esp8266/Server.h
	hardware/esp8266com/esp8266/cores/esp8266/Udp.h
	hardware/esp8266com/esp8266/cores/esp8266/binary.h

WiFiClient::connected() should return true if the connection is disconnected, but there is still data available. This is specified in the Arduino docs: http://www.arduino.cc/en/Reference/WiFiClientConnected

* esp8266: (21 commits)
  HardwareSerial: add other configs than 8N1
  Delete jre-8u31.zip.sha
  Fix Windows build
  Add boot loader compatible speed of 74880 to serial.
  update SDK to esp_iot_sdk_v1.0.1_15_04_24
  include stdlib_noniso.h in Arduino.h see #110
  strnlen implementation
  missing strn program space wrappers
  uart_interrupt_handler is now in ram
  move libm to flash (.irom0.text) saves 3544 Byte in ram see #104
  Revert c_types.h
  fix bug #98
  add INPUT_PULLDOWN support
  add prototypes for ets_vsnprintf and ets_vprintf fix some compiler warnings
  update SDK to 1.0.1_b2_15_04_10 + SSL Patch
  update SDK to 1.0.1_b1_15_04_02
  add files to ignore (use hardlink) to get git hardware in arduino dir
  Add method to configure softAP IP address
  test for #86
  add to ESP class: getChipId getSDKversion getBootVersion getBootMode getCPUfreqMHz
  ...

move uart_interrupt_handler in ram

warning: format '%d' expects argument of type 'int', but argument 3 has type 'long unsigned int' [-Wformat=]
warning: defined but not used [-Wunused-variable]
warning: declared 'static' but never defined [-Wunused-function]
warning: suggest parentheses around '&&' within '||' [-Wparentheses}

add gitter badge

see #125

ram macro, fix warnings, #125

fix #74, fix #7

Might be useful to distinguish between normal and multicast packets arriving at the same port (#105)

This was not immediately apparent to me. I don't think it would be apparent to anyone else just playing around with ESP8266/Arduino either. GPIO16 and RST (REST) need to be tied together or you can "never wake from .deepSleep"

It must be GPIO16 and it must be RST, no other GPIO pin will wake it from deepSleep.

Ability to wake from .deepSleep

ESP8266WiFi: made connected() return true if data is available

….4.3)

update installing instructions, using suggested paths from: https://learn.adafruit.com/adafruit-all-about-arduino-libraries-install-use/how-to-install-a-library

Add prerequisites section to address #11

…ed by @toddtreece

from:

http://download.igrr.me/osx-xtensa-lx106-elf.tgz
http://download.igrr.me/linux64-xtensa-lx106-elf.tgz
http://download.igrr.me/win32-xtensa-lx106-elf.tgz