Update README.md
Update targets and pins for LPC43xx
Merge pull request #12 from micromint/master

Update targets and pins for LPC43xx
fix target name
Stop using the patched microlib
Preliminary support for LPC13XX

Works only with GCC_ARM for now.
[LPC1347]: first implementation of PWMOut (not tested)
[LPC1347]: first implementation of analogIn (not tested)
[LPC1347] Added GPIO interrupts
[LPC1347]: first implementation of USB device (not tested)
[LPC1347] Added support for the ARM toolchain.
[LPC1347] Change LED pin names
[LPC1347]: add support for RTOS
Added support for UART break generation.
[LPC11U24] Take advantage of the full 8K of RAM

The linker command scripts/startup files used only 4K of RAM on this target.
mbed_interface_disconnect/powerdown are now synchronous calls

Fixes PRMBED-804
Update README.md
synch targets, exporters and tests
Correctly wait for powerup acknowledge
Add support for legacy build conventions
Improve exporter test
Build the hal implementation and common sources separately to have proper
temporary relative paths