Use zip -b /tmp

Closes gh-36

Allow httpdocs-path that doesn't end in /reference

Closes gh-20

rsync-antora-reference.sh returns rsync status code

Closes gh-28

Add missing files to bust-cloudflare-antora-cache

Closes gh-25

Merge pull request #22 from philwebb/context-path

Add context-path support to bust-cloudflare-antora-cache

Fix empty BUILD_REFNAME

Previously the value of --build-ref-name would be '""' if BUILD_REFNAME was
empty

Closes gh-19

rsync includes .htaccess for branch specific build

Closes gh-18

rename variable rysnc_opts -> rsync_opts

Closes gh-15

Add httpdocs-path

Closes gh-10

Allow SSH_KNOWN_HOST of # to do nothing

Closes gh-9