Merge pull request peterbraden#635 from flyashi/patch-1

Fix off-by-one error in README

README.md

@@ -136,7 +136,7 @@ var mat = new cv.Matrix.Eye(4,4); // Create identity matrix
 mat.get(0,0) // 1
 
 mat.row(0)  // [1,0,0,0]
-mat.col(4)  // [0,0,0,1]
+mat.col(3)  // [0,0,0,1]
 ```
 
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