Added comments and help commands to user apps

hello.c

@@ -1,7 +1,18 @@
 #include "types.h"
 #include "user.h"
 
+// User app that was from one of the tutorial but i have since changed it to provide useful information about the current process and console
 int main(int argc, char *argv[]) {
+
+    for (int i = 1; i < argc; i++) {
+        if (strcmp(argv[i],  "-help") == 0)
+        {
+            printf(1, "Does a system call that returns the current process and console information, used for debugging.\n");            
+            exit();
+            return 0;
+        }
+    }
+
     greeting();    
     exit();
 }