Merge pull request #42 from olivif/olivif/deltaframetypo

Fixing missing word in frames section

README.md

@@ -310,7 +310,7 @@ One thing we can do it's a subtraction, we simply **subtract frame 1 from frame
 
 ![delta frames](/i/difference_frames.png "delta frames")
 
-But if I tell you that there is a **better method** which uses even fewer bits?! First, let's treat the `frame 0` as a collection of well-defined partitions and then we'll try to match the blocks from `frame 0` on `frame 1`. We can think of it as **motion estimation**.
+But what if I tell you that there is a **better method** which uses even fewer bits?! First, let's treat the `frame 0` as a collection of well-defined partitions and then we'll try to match the blocks from `frame 0` on `frame 1`. We can think of it as **motion estimation**.
 
 > ### Wikipedia - block motion compensation
 > "**Block motion compensation** divides up the current frame into non-overlapping blocks, and the motion compensation vector **tells where those blocks come from** (a common misconception is that the previous frame is divided up into non-overlapping blocks, and the motion compensation vectors tell where those blocks move to). The source blocks typically overlap in the source frame. Some video compression algorithms assemble the current frame out of pieces of several different previously-transmitted frames."