Added instructions to install libpq-dev dependency for PostgreSQL.
Added instructions to install libpq-dev dependency for PostgreSQL.

beeftornado/sentry,drcapulet/sentry,alexm92/sentry,felixbuenemann/sentry,mitsuhiko/sentry,fotinakis/sentry,ifduyue/sentry,nicholasserra/sentry,1tush/sentry,1tush/sentry,zenefits/sentry,JamesMura/sentry,mvaled/sentry,JackDanger/sentry,Kryz/sentry,gg7/sentry,fotinakis/sentry,BayanGroup/sentry,kevinlondon/sentry,ewdurbin/sentry,ngonzalvez/sentry,mvaled/sentry,ifduyue/sentry,looker/sentry,songyi199111/sentry,wujuguang/sentry,korealerts1/sentry,ifduyue/sentry,gencer/sentry,Natim/sentry,mvaled/sentry,daevaorn/sentry,mvaled/sentry,gg7/sentry,imankulov/sentry,BuildingLink/sentry,fotinakis/sentry,korealerts1/sentry,JamesMura/sentry,drcapulet/sentry,wujuguang/sentry,jean/sentry,zenefits/sentry,alexm92/sentry,drcapulet/sentry,felixbuenemann/sentry,daevaorn/sentry,gencer/sentry,fuziontech/sentry,gencer/sentry,Kryz/sentry,hongliang5623/sentry,looker/sentry,JamesMura/sentry,JackDanger/sentry,gg7/sentry,pauloschilling/sentry,boneyao/sentry,boneyao/sentry,kevinastone/sentry,BuildingLink/sentry,Kryz/sentry,beeftornado/sentry,songyi199111/sentry,BuildingLink/sentry,jean/sentry,jean/sentry,1tush/sentry,looker/sentry,felixbuenemann/sentry,jean/sentry,wong2/sentry,hongliang5623/sentry,BuildingLink/sentry,ngonzalvez/sentry,wong2/sentry,kevinlondon/sentry,looker/sentry,Natim/sentry,ifduyue/sentry,pauloschilling/sentry,ewdurbin/sentry,fotinakis/sentry,hongliang5623/sentry,gencer/sentry,JackDanger/sentry,JamesMura/sentry,Natim/sentry,zenefits/sentry,beeftornado/sentry,boneyao/sentry,jean/sentry,songyi199111/sentry,korealerts1/sentry,kevinlondon/sentry,BuildingLink/sentry,nicholasserra/sentry,kevinastone/sentry,wujuguang/sentry,BayanGroup/sentry,zenefits/sentry,wong2/sentry,daevaorn/sentry,alexm92/sentry,imankulov/sentry,ngonzalvez/sentry,looker/sentry,daevaorn/sentry,mvaled/sentry,ifduyue/sentry,mitsuhiko/sentry,zenefits/sentry,pauloschilling/sentry,imankulov/sentry,BayanGroup/sentry,gencer/sentry,JamesMura/sentry,ewdurbin/sentry,kevinastone/sentry,fuziontech/sentry,fuziontech/sentry,nicholasserra/sentry,mvaled/sentry