Fix typo

README.md

 Using Makefile is not mandatory; you can call MKit commands directly
 via *utils/mkit/make* command.  It is conventional, however: your users
 will be able to use the ubiquitous: `make` and `sudo make install`,
-and you get tab copmpletion for free.
+and you get tab completion for free.
 
 
 ### 3. add mkit.ini with everything about your project ###