Add make command to build description.
diff --git a/README b/README
index b8da21f..d5f10d4 100644
--- a/README
+++ b/README
@@ -132,6 +132,7 @@ Basic *nix build instructions:
./autogen.sh # only needed if building from git repo
CFLAGS="-O2 -Wall -march=native" ./configure <options>
+ make
No installation is necessary. You may run cgminer from the build
directory directly, but you may do make install if you wish to install