Update README.md

Author: Ruilong Li(李瑞龙)

Diff for: README.md

@@ -10,7 +10,7 @@ pip install git+https://github.com/Project-Splinter/streamer_pytorch --upgrade
 # via git clone
 git clone https://github.com/Project-Splinter/streamer_pytorch
 cd streamer_pytorch
-python setup.py --develop
+python setup.py develop
 ```
 
 ## Usage
@@ -31,4 +31,4 @@ python demo.py --camera --vis
 - CaptureStreamer(id=0, width=512, height=512, pad=True)
 - VideoListStreamer(files, width=512, height=512, pad=True)
 - ImageListStreamer(files, width=512, height=512, pad=True)
-- aug_matrix(w1, h1, w2, h2, pad=True)
+- aug_matrix(w1, h1, w2, h2, pad=True)