Fixed command typo in README.md

README.md

@@ -68,10 +68,10 @@ We recommend using [CMake](https://cmake.org/) for its extensive cross-platform
 git submodule init
 git submodule update
 cmake -H. -Bbuild -DCMAKE_BUILD_TYPE=DEBUG
-cmake --build -build 
+cmake --build build 
 ```
 
-Builds are placed in `bin` and `bin\lib`. Change `CMAKE_BUILD_TYPE` to `RELEASE` for a smaller and optmized build.
+Use `libzt.a` or `libzt.dylib` in your application. They are placed in `bin\lib`. Change `CMAKE_BUILD_TYPE` to `RELEASE` for a smaller and optmized build.
 
 ### Install
 
@@ -93,4 +93,4 @@ Please make pull requests against the `dev` branch. The `master` branch is relea
 
 ### Adding a custom network stack
  - If you wish to use something other than lwIP or picoTCP, you can easily add your own API function calls in `src/libzt.cpp` or `src/VirtualSocket.cpp` depending on whether your stack's API exposes a POSIX-socket API or a raw API, respectively.
- 
+