fix twitter link
Merge branch 'master' of github.com:adrn/adrn.github.io
Merge branch 'master' of github.com:adrn/adrn.github.io
Merge branch 'master' of github.com:adrn/adrn.github.io
Merge branch 'master' of github.com:adrn/adrn.github.io
remove shadow