Minor cleanup and code doc comment improvement

Author: Andrew Theis

Sources/PostgreSQL/Database/PostgreSQLDatabaseConfig.swift

@@ -24,7 +24,8 @@ public struct PostgreSQLDatabaseConfig {
     /// Optional password to use for authentication.
     public let password: String?
 
-    /// Optional TLSConfiguration. Set this if your PostgreSQL server requires an SSL configuration
+    /// Optional TLSConfiguration. Set this if your PostgreSQL server requires an SSL connection
+    /// For paid Heroku Postgres plans, set this to `.forClient(certificateVerification: .none)`
     public let tlsConfiguration: TLSConfiguration?
 
     /// Creates a new `PostgreSQLDatabaseConfig`.

contribute_bootstrap.sh

@@ -5,7 +5,6 @@ echo "💧  exporting docker machine environment..."
 eval $(docker-machine env default)
 
 echo "💧  cleaning previous psql containers..."
-rm -rf postgres
 docker stop vapor-psql
 docker stop vapor-psql-ssl
 docker rm vapor-psql