Added *.db to .gitignore
Added *.db to .gitignore

This should match the sqlite databases.

henn/hil_sahil,henn/hil_sahil,kylehogan/hil,kylehogan/hil,apoorvemohan/haas,henn/hil,lokI8/haas,SahilTikale/switchHaaS,SahilTikale/haas,kylehogan/haas,henn/haas,meng-sun/hil,henn/hil,CCI-MOC/haas,apoorvemohan/haas,meng-sun/hil