update readme

README.md

@@ -4,20 +4,20 @@ it allocates memory
 
 ## how to use
 
-- run the executable
+```
-- enter how much memory you want to allocate
+usage: allocatememory -b <bytes> [-o <output file>] [-s]
-        - i.e. "1g" = 1 GiB = 1073741824 bytes
+
-        - the limit is how much memory you have...or more. your funeral.
+OPTIONS
-- confirm (y)
+  -h    displays help
-- wait for the program to allocate the memory
+  -b    number of bytes to allocate (e.g. 1024, 1g, 64K)
-- your memory is allocated
+  -o    file to output to
-- press ENTER or CTRL+C to free the memory and exit the program
+  -s    run silently (requires -b and -o)
-- ???
+  -w    disable warnings ("i know what i'm doing!")
-- profit
+```
 
 ## how to compile
 
-- get a c compiler (i use gcc)
+- get a c compiler (i use gcc or clang)
 - `gcc -o ./allocatememory -O2 ./main.c`
 - ???
 - profit