added VIM .swp files to gitignore
added VIM .swp files to gitignore

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