update readme

README.md

@@ -58,11 +58,10 @@ See [tutorials](http://tensorpack.readthedocs.io/en/latest/tutorial/index.html)
 Dependencies:
 
 + Python 2.7 or 3
-+ TensorFlow >= 1.2.0
 + Python bindings for OpenCV (Optional, but required by a lot of features)
++ TensorFlow >= 1.2.0 (Optional if you only want to use `tensorpack.dataflow` alone as a data processing library)
 ```
 # install git, then:
 pip install -U git+https://github.com/ppwwyyxx/tensorpack.git
 # or add `--user` to avoid system-wide installation.
 ```
-If you only want to use `tensorpack.dataflow` alone as a data processing library, TensorFlow is also optional.

examples/FasterRCNN/utils/generate_anchors.py

@@ -107,6 +107,8 @@ if __name__ == '__main__':
     #print(a)
     #from IPython import embed; embed()
 
-    print(generate_anchors(
+    anchors = generate_anchors(
                 16, scales=np.asarray((2, 4, 8, 16, 32), 'float32'),
-                ratios=[0.5,1,2]))
+                ratios=[0.5,1,2])
+    print(anchors)
+    import IPython as IP; IP.embed()