rebrand to useSend (#210)

.env.selfhost.example

@@ -4,9 +4,9 @@ REDIS_URL="redis://redis:6379"
 # Postgres - required for docker-compose, not needed for just docker
 POSTGRES_USER="postgres"
 POSTGRES_PASSWORD="postgres"
-POSTGRES_DB="unsend"
+POSTGRES_DB="usesend"
 # Postgres - required
-DATABASE_URL="postgresql://postgres:postgres@postgres:5432/unsend"
+DATABASE_URL="postgresql://postgres:postgres@postgres:5432/usesend"
 
 # NextAuth - required
 NEXTAUTH_URL="http://localhost:3000"
@@ -14,7 +14,7 @@ NEXTAUTH_SECRET=
 
 #SMTP
 SMTP_HOST=smtp.mailtrap.io  # Example SMTP host
-SMTP_USER= "unsend" # Example SMTP user
+SMTP_USER= "usesend" # Example SMTP user
 
 ## Auth providers any one is required
 # GitHub login - required