BUILD.rst: Listed more announcement tasks.
BUILD.rst: Listed more announcement tasks.

Update issue 88
Status: Done
Added also announcing via tweet and email.

haeygen/SSHLibrary,garybehrend/robotframework-sshlibrary,jussimalinen/SSHLibrary,garybehrend/robotframework-sshlibrary,junousia/SSHLibrary,junousia/SSHLibrary,jussimalinen/SSHLibrary,haeygen/SSHLibrary