Support connecting using connection string

src/Hangfire.Raven/Repository.cs

@@ -19,6 +19,7 @@ namespace HangFire.Raven
 {
     public class Repository : IDisposable
     {
+        public static string ConnectionString { get; set; }
         public static string ConnectionUrl { get; set; }
         public static string DefaultDatabase { get; set; }
 
@@ -62,10 +63,20 @@ namespace HangFire.Raven
 
                         ((EmbeddableDocumentStore)_documentStore).Configuration.Storage.Voron.AllowOn32Bits = true;
                     } else {
-                        _documentStore = new DocumentStore
+                        if (!string.IsNullOrEmpty(ConnectionString))
                         {
-                            Url = ConnectionUrl
-                        };
+                            _documentStore = new DocumentStore
+                            {
+                                ConnectionStringName = ConnectionString
+                            };
+                        }
+                        else
+                        {
+                            _documentStore = new DocumentStore
+                            {
+                                Url = ConnectionUrl
+                            };
+                        }
                     }
 
                     _documentStore.Conventions.DefaultQueryingConsistency = ConsistencyOptions.AlwaysWaitForNonStaleResultsAsOfLastWrite;

src/Hangfire.Raven/Storage/RavenStorageExtensions.cs

@@ -24,6 +24,18 @@ namespace HangFire.Raven.Storage
 {
     public static class SqlServerStorageExtensions
     {
+        public static IGlobalConfiguration<RavenStorage> UseRavenStorage(this IGlobalConfiguration configuration, string connectionString)
+        {
+            configuration.ThrowIfNull("configuration");
+            connectionString.ThrowIfNull("connectionString");
+
+            Repository.ConnectionString = connectionString;
+
+            var storage = new RavenStorage();
+
+            return configuration.UseStorage(storage);
+        }
+
         public static IGlobalConfiguration<RavenStorage> UseRavenStorage(this IGlobalConfiguration configuration, string connectionUrl, string database)
         {
             configuration.ThrowIfNull("configuration");