Fixed typo in Scheduler header guard.

psigen · psigen · commit ce1b8f369fda · 2015-07-03T13:10:33.000-04:00
The header guard in the Scheduler.h file was previously misspelled.
diff --git a/src/Scheduler.h b/src/Scheduler.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef _SCHEDULDER_H_
-#define _SCHEDULDER_H_
+#ifndef _SCHEDULER_H_
+#define _SCHEDULER_H_
 
 #include <Arduino.h>
 
