ISqliteConnection should derive from IDisposable, otherwise it can't be used with the "using" c# construct

(also: added ncrunch files to .gitignore)

Author: carlosirna

.gitignore

@@ -265,3 +265,6 @@ paket-files/
 # CodeRush
 .cr/
 
+# NCrunch
+*.ncrunchsolution
+*.ncrunchproject

src/SQLite.cs

@@ -159,7 +159,7 @@ public enum CreateFlags
 		FullTextSearch4 = 0x200
 	}
 
-	public interface ISQLiteConnection
+	public interface ISQLiteConnection : IDisposable
 	{
 		Sqlite3DatabaseHandle Handle { get; }
 		string DatabasePath { get; }
@@ -215,7 +215,6 @@ CreateTablesResult CreateTables<T, T2, T3, T4, T5> (CreateFlags createFlags = Cr
 		int Delete (object primaryKey, TableMapping map);
 		int DeleteAll<T> ();
 		int DeleteAll (TableMapping map);
-		void Dispose ();
 		int DropTable<T> ();
 		int DropTable (TableMapping map);
 		void EnableLoadExtension (bool enabled);