Update README.md

Added:
- Dependencies
- References
- Example result

README.md

@@ -1,2 +1,23 @@
-# shadow-removal
-Implementation of Shadow Removal Algorithms
+# shadow-removal  
+Implementation of Shadow Removal Algorithms  
+
+Tested for Python 3.7. Requires (might also work with older versions):  
+
+ - OpenCV 4.2   
+ - Numpy 1.17  
+ - Scikit-image 0.16
+
+The implemented methods:  
+- Murali, Saritha, and V. K. Govindan.   
+"Removal of shadows from a single image."   
+the Proceedings of First International Conference on Futuristic Trends   
+in Computer Science and Engineering. Vol. 4.  
+
+- Murali, Saritha, and V. K. Govindan.   
+"Shadow detection and removal from a single image using LAB color space."   
+Cybernetics and information technologies 13.1 (2013): 95-103.
+
+Example:
+
+![inputImage](images/test.jpg "Input")
+![removedShadows](images/test_shadowClear.jpg "Output")