Adds placeholders for twitter api credentials for production.
Adds placeholders for twitter api credentials for production.

tdziurko/jvm-bloggers,jvm-bloggers/jvm-bloggers,szpak/jvm-bloggers,szpak/jvm-bloggers,jvm-bloggers/jvm-bloggers,jvm-bloggers/jvm-bloggers,kraluk/jvm-bloggers,jvm-bloggers/jvm-bloggers,kraluk/jvm-bloggers,kraluk/jvm-bloggers,szpak/jvm-bloggers,tdziurko/jvm-bloggers,tdziurko/jvm-bloggers,kraluk/jvm-bloggers,tdziurko/jvm-bloggers,szpak/jvm-bloggers