Added helper functions for file manipulation

file_helpers.h

@@ -0,0 +1,11 @@
+
+
+/* Takes a string that represents a filename, and converts the contents 
+of the file into a string */
+char* file_to_string(char* filename);
+
+
+
+
+/*Finds the number of new-line characters in the given file */
+int num_of_lines(char* filename);