Remove broken Gem from .irbrc file.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
Switch numbers off by default, and add toggle to display line endings.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
Add .ackrc for ack.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
Add basic .screenrc file.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>