made examples/demos for vectors && files && lists | also fixed a bug with the vector and list size and popping, explained in the adjacent comment

include/file.h

@@ -13,15 +13,13 @@ file_t* fileInit(char* path);				// initialization function
 
 void fileCleanup(file_t* f);				// just to be memory safe...
 
-int fileCountLines(file_t* f);				// counts the lines in a file
-
 void filePrint(file_t* f);					// prints the file as a string
 
 char* fileToString(file_t* f);				// returns a string with the file contents
 
-void fileWriteln(file_t* f, char* line);	// appends a given string to the file on a newline
+void fileWriteln(file_t* f, char* payload);	// appends a given string to the file on a newline
 
-void fileWrite(file_t* f, char* line);		// appends a given string to the file (not on a newline!)
+void fileWrite(file_t* f, char* payload);	// appends a given string to the file (not on a newline!)
 
 void fileClear(file_t* f);					// wipes the file contents