Added Arduino Example templates; corrected code for no more errors

No more Arduino IDE errors for the library; added more examples for presence and distance sensing

Author: MadisonC-SparkFun

examples/Example01_BasicUsage/Example01_BasicUsage.ino renamed to examples/Example01_DistanceBasicReadings/Example01_BasicUsage/Example01_BasicUsage.ino

@@ -0,0 +1,9 @@
+void setup() {
+  // put your setup code here, to run once:
+
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+}

examples/Example02_DistanceSettings/Example02_DistanceSettings.ino

@@ -0,0 +1,9 @@
+void setup() {
+  // put your setup code here, to run once:
+
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+}

examples/Example03_PresenceBasicReadings/Example03_PresenceBasicReadings.ino

@@ -0,0 +1,9 @@
+void setup() {
+  // put your setup code here, to run once:
+
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+}