Create README.md

README.md

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+iAccelStepper
+=============
+
+interrupt driven stepper controller inherited from AccelStepper
+
+To use this module inherit from the AccelStepper class (http:https://www.airspayce.com/mikem/arduino/AccelStepper/), modify it to expose necessary members into public:
+
+_stepInterval
+_direction
+_currentPos
+_targetPos
+_speed
+_pin[4]
+
+Within Energia on LM4F target there are only two timers available for free use: Timer1 and Timer2
+
+// SYSCTL_PERIPH_TIMER0, // wiring_analog.c analogWrite()
+// SYSCTL_PERIPH_TIMER1,
+ SYSCTL_PERIPH_TIMER2,
+ SYSCTL_PERIPH_TIMER3
+// SYSCTL_PERIPH_TIMER4, // Tone.c
+// SYSCTL_PERIPH_TIMER5, // wiring.c - millis() micros()
+// SYSCTL_PERIPH_TIMER6,
+// SYSCTL_PERIPH_TIMER7