Update installation command in README.md to specify fmpose3d version 0.0.7

Author: xiu-cs

README.md

@@ -28,7 +28,7 @@ conda activate fmpose_3d
 ```bash
 git clone xxxx.git  # clone this repo
 # TestPyPI (pre-release/testing build)
-pip install --index-url https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple/ fmpose3d==0.0.5
+pip install --index-url https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple/ fmpose3d==0.0.7
 # Future Official PyPI release
 # pip install fmpose3d
 ```