Add another alt version to 1993/rince + formatting

The formatting of the README.md file has been completed. Typos were also
fixed.

The formatting of the design.md has been completed. Typos were also
fixed.

The second alt version makes movement for the default game (which is in
the source code itself) more familiar to vi users. It is an exercise for
others to change the somewhat awkward keys for other games. Looking at
design.md might be of help there.

The bugs.md has been updated with a set of features, not bugs, that
should no be fixed.

1993/rince/design.md

@@ -26,12 +26,11 @@ Hence:
 	...	  ...
 ```
 
-This does of course have the odd problem with clashes. What if we want to
-roll two down boulders down simultaneously towards the same square.
-I perform no buffering, and so this situation is just a 'fight it out' and
-let which ever transition has priority win. Such a case may produce the
-following change of maps (depending on which 'roll' transition is used
-first).
+This does of course have the odd problem with clashes. What if we want to roll
+two boulders down simultaneously towards the same square.  I perform no
+buffering, and so this situation is just a 'fight it out' and let which ever
+transition has priority win. Such a case may produce the following change of
+maps (depending on which 'roll' transition is used first).
 
 ```
 	o.o			..o	    o..
@@ -40,7 +39,7 @@ first).
 ```
 
 I claim that it is possible to perform all of the 3x3 to 1x1 transitions in a
-3x3 to 3x3 based system. One other feature added in is a work around for the 'no
+3x3 to 3x3 based system. One other feature added in is a workaround for the 'no
 buffering' problem. If we define a space ship (as in the [Space
 Invaders](https://en.wikipedia.org/wiki/Space_Invaders) example) to fly right,
 and we are 'walking through' our map from top-left to bottom-right, then it is
@@ -84,7 +83,7 @@ is written as: `eabcdfghi512346789K`.
 
 If there are no keys needed for this transition, the character `*1` should
 be used instead. Now the format of the game description file is now
-the following: (angle brackets denote an 'entity' to be defined).
+the following (angle brackets denote an 'entity' to be defined):
 
 
 ```