message: cmake example should include release flag
diff: @@ -258,7 +258,9 @@ example need to be replaced with paths specific to your system. This command
  should be invoked from within the build folder.
  ```bash
  -cmake --verbose -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
  +cmake --verbose \
  +-DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
  +-DCMAKE_BUILD_TYPE=Release \
  -DLIBUV_DIR=/opt/libuv-1.10.2 \
  -DJANSSON_DIR=/opt/jansson-2.10 \
  -DCMAKE_INSTALL_PREFIX=/var/tmp/wampcc_install \
  