Added a function that will return a time string

from a duration passed into it

src/main/java/mattrixwv/Stopwatch.java

@@ -97,7 +97,11 @@ public class Stopwatch{
 	//Returns the time as a string at the 'best' resolution. (Goal is xxx.xxx)
 	public String getStr(){
 		//Get the current duration from time
-		Double duration = getTime().doubleValue();
+		return getStr(getTime().doubleValue());
+	}
+
+	public static String getStr(double nanoseconds){
+		Double duration = nanoseconds;
 		//Reduce the number to the appropriate number of digits. (xxx.x).
 		//This loop works down to seconds
 		TIME_RESOLUTION resolution;