bind db.connection as well

[challet]

Original Laravel DatabaseServiceProvider binds the 'db.connection' service which is missing here.

 dd(app('db.connection'));
Illuminate\Database\PostgresConnection

What I don't understand is it seems to have work previously : https://github.com/njbarrett/laravel-postgis/issues/62

[coveralls]

Coverage remained the same at 84.0% when pulling 1267f2e on challet:patch-1 into b751206 on njbarrett:master.

[challet]

By the way, it seems that with Larvel 5.5 and package auto-discovery, Phaza\LaravelPostgis\DatabaseServiceProvider is called before the ones from app config and then the service db.factory is not Phaza\LaravelPostgis\Connectors\ConnectionFactory but :

string(5) "phaza"
string(7) "laravel"
Psy Shell v0.8.16 (PHP 7.1.4-1+deb.sury.org~xenial+1 — cli) by Justin Hileman
>>> app('db.factory')
=> Illuminate\Database\Connectors\ConnectionFactory {#215}