README: clean up old version history entries
tree61f48c3f8cfed29fce4d3bdfc1bd4457833ace34
-rw-r--r-- 1526 LICENSE
-rwxr-xr-x 177215 Markdown.pl
lrwxrwxrwx 11 Markdown.pm -> Markdown.pl
-rw-r--r-- 17150 README
lrwxrwxrwx 6 README.md -> README
-rw-r--r-- 9672 basics.md
-rw-r--r-- 50580 syntax.md