Fix a few things in README

The <channel> and <value> bits weren't printing in markdown format, and the 20% example didn't write to the device file.
Merge pull request #4 from knewter/patch-1

Fix a few things in README
Adding links to library for node & c# + clarification on pins
Merge branch 'master' of github.com:sarfata/pi-blaster
First commit for individual PWM pin assignment.
Added comments to new code for not locking all pins as PWM.
WIP on individual PWM assignment for GPIO pins. Commented out printing debugging info.
Removed compiled file from repo, added release pin to pi-blaster.
Added pins being used to release method.
Fixed missing declaration.
Add width = 0 when releasing a pin.
Added release command to pi-blaster to unlock previsouly set pwm pins
WIP on pi-blaster PWM setup and release by pin.
Removed debugging info and updated README
Fixed typo.
Merge pull request #1 from hybridgroup/individual-pin-setup

Enables pins to be setup as PWM individually and released for digital IO afterwards.
Readme updates based on Thomas Sarlandie.
Added Pete back to contributors.
Merge pull request #3 from hybridgroup/individual-pin-setup

Added Pete back to contributors.
Merge pull request #2 from hybridgroup/refactor-feedback

Readme updates based on Thomas Sarlandie.