Add README for examples

remove eg1, very out of date

Author: petercorke

examples/README.md

@@ -15,14 +15,12 @@
 ## Feature extraction
 
 * [blobs1.py](blobs1.py) blob/region features
+* [blobs2.py](blobs2.py) nested blob/region features
 * [corners.py](corners.py) SIFT, ORB etc. corner features
-* [matching.py](matching.py)
-
-[text](eg1.py) 
+* [matching.py](matching.py) SIFT matching points between images
 
 
 ## Miscalleneous
 
-[mvtbtool.py](mvtbtool.py) 
 [ransac_line.py](ransac_line.py) demo of RANSAC fitting line to badly corrupted data