Merge pull request #276 from bmyerz/master

make the unix cmake example work

diff --cc README.md
index b2c3574,f48aa24..93c8d1f
--- 1/README.md
--- 2/README.md
+++ b/README.md
@@@ -94,10 -67,10 +94,10 @@@ Alternatively, from the command-line o
  
      mkdir -p build/debug
      cd build/debug
-     cmake -DCMAKE_BUILD_TYPE=debug -DBUILD_STATIC_LIBS=ON -DBUILD_SHARED_LIBS=OFF -G "Unix Makefiles" ../..
+     cmake -DCMAKE_BUILD_TYPE=debug -DBUILD_STATIC_LIBS=ON -DBUILD_SHARED_LIBS=OFF -DARCHIVE_INSTALL_DIR=. -G "Unix Makefiles" ../..
      make
  
 -Running `cmake -`" will display the list of available generators (passed using
 +Running `cmake -h` will display the list of available generators (passed using
  the `-G` option).
  
  By default CMake hides compilation commands. This can be modified by specifying