Update BUILDING.md

BUILDING.md

@@ -7,21 +7,22 @@ python -m pip install --upgrade pip
 
 # Clone code including submodule
 git clone --recurse-submodules https://github.com/dofuuz/python-soxr.git
+
+cd python-soxr
 ```
 
 
 ## Build package(wheel)
 ```
-cd python-soxr
-pip wheel -ve .
+pip wheel -v .
 ```
 
 ### (Alternative method) Build using system libsoxr
 libsoxr should be installed before building.  
 (e.g. `sudo apt install libsoxr-dev`)
 ```
 export CMAKE_ARGS="-DUSE_SYSTEM_LIBSOXR=ON"
-pip wheel -ve .
+pip wheel -v .
 ```
 It will link libsoxr dynamically and won't bundle libsoxr in the wheel package.
 
@@ -39,6 +40,5 @@ pip install ./soxr-[...].whl
 pip install pytest
 
 # Test (using installed Python-SoXR)
-cd python-soxr/tests
 python -m pytest
 ```