Adding the initial commit of the SigChan library.

Later additions will include the ability to set a custom callback upon
receiving the interrupt signal.

main.go

@@ -0,0 +1,19 @@
+package sigchan
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"os/signal"
+)
+
+// SigChan listens for os interrupt signals and gracefully exits the program.
+func SigChan() {
+	sigchan := make(chan os.Signal, 10)
+	signal.Notify(sigchan, os.Interrupt)
+	<-sigchan
+	fmt.Println()
+	log.Println("Received CTRL+C interrupt. Program killed!")
+
+	os.Exit(0)
+}