CSAW CTF 2014: link to writeups by @evandrix

Closes #126, #127, and #128.
CSAW CTF 2014: link to some write-ups
CSAW CTF 2014: link to ‘Obscurity’ write-up

Closes #131.
CSAW CTF 2014: link to write-ups on sugarstack.io

Closes #130.
CSAW CTF 2014: update list of completed write-ups
CSAW CTF 2014: link to write-ups by tasteless

Closes #129.
CSAW CTF 2014: link to write-ups by @shankaraman

Closes #133, #134, #135, and #136.
CSAW CTF 2014: add ‘Shameless plug’ write-up

Closes #137.
CSAW CTF 2014: minor cleanup
CSAW CTF 2014: complete Fluffy No More write-up

Closes #118.
CSAW CTF 2014: link to ‘Feal’ write-up
CSAW CTF 2014: link to another Saturn write-up

Closes #138.
ASIS Cyber Security Contest Quals 2014: mention `knock`
manual merge