Format fix 2012/vik/README.md + add alt code

Based on the author's description I made an alt version that should
theoretically work in Windows though of course (thank goodness) I have
no way to actually test it.

Just like with 2011/vik I've only done this because part of issue #1 is
to make entries work on as many systems as possible though it's not
entirely clear to me that 'Windows' should even be considered a 'system'
at all let alone one worthy of consideration :-)

Updated .gitignore.

bugs.md

@@ -1987,6 +1987,15 @@ fire](https://en.wikipedia.org/wiki/Halt_and_Catch_Fire_(computing)) :-)
 
 # 2012
 
+## [2012/vik](2012/vik/vik.c) ([README.md](2012/vik/README.md))
+## STATUS: INABIAF - please **DO NOT** fix
+
+The author stated that the program will crash if no argument is passed to the
+program or if invalid arguments or images of mismatching sizes or unsupported
+pixel formats though we note that your computer might also [halt and catch
+fire](https://en.wikipedia.org/wiki/Halt_and_Catch_Fire_(computing)) :-)
+
+
 
 # 2013