Adds create a slices eg

Author: hegdeashwin

codes/ch6_slices/create-a-slices.go

@@ -0,0 +1,23 @@
+package main
+
+func main() {
+
+	/**
+	 * Blank [] will declare a slices.
+	 * If you provide size like [5] will declare an array.
+	 */
+	var employee []string
+
+	/**
+	 * Initialize a slices with type, length and capacity.
+	 * length is required field.
+	 * 
+	 * make([]string, length, [capacity])
+	 */
+	employee = make([]string, 3)
+
+	employee[0] = "Ashwin"
+	employee[1] = "Kumar"
+	employee[2] = "Saju"
+	// employee[3] = "Ajay" // This will throw an error `out of range`
+}