Update readme

README.md

@@ -2,3 +2,22 @@ doubleplusunzip
 ===============
 
 The Worlds First File Inflater
+
+Installation is simple, I don't feel the need for a makefile, but if you've no idea how to compile, just run:
+
+cc -o dpu ./dpu.c
+cc -o undpu ./undpu.c
+
+OR if you want to *install* it you can run:
+
+cc -o /usr/local/bin/dpu ./dpu.c
+cc -o /usr/local/bin/undpu ./undpu.c
+
+My further work will to be to properly use getopt (like not a chump), and also to create a proper useage()
+
+Right now, just use:
+dpu [decompression size] filename
+
+The decompression size is an optional argument, and when used it will multiply the filesize by that. The default amount is 10 (making a file 10 times bigger).
+
+The output of the program will the filename.dpu