client: fix invalid `shutdown` check

`side->shutdown` is enum, and not boolean value.
v0.32.6

Signed-off-by: Fedor Indutny <fedor@indutny.com>
client: not-connected side is fatal in shutdown
v0.32.7

Signed-off-by: Fedor Indutny <fedor@indutny.com>
readme: move around FS ciphers
readme: specifying timeout measures, little nits
Readme: Add -g for installing
Merge branch 'master' of github.com:indutny/bud