ZopfliPNG
diff --git a/README b/README
index ba52e97..b28b189 100644
--- a/README
+++ b/README
@@ -25,5 +25,8 @@
create very well compressed gzip files. Currently the makefile builds this
program with the library statically linked in.
+To build the binary, use "make". To build the library as a shared Linux library,
+use "make libzopfli". The source code of Zopfli is under src/zopfli.
+
Zopfli Compression Algorithm was created by Lode Vandevenne and Jyrki
Alakuijala, based on an algorithm by Jyrki Alakuijala.