Add docs for sqlite

docs/content/user-guide/zh/transports/general.md

@@ -27,3 +27,6 @@ CAP supports several transport methods:
 >`Kafka` vs `RabbitMQ` :   
 > https://stackoverflow.com/questions/42151544/is-there-any-reason-to-use-rabbitmq-over-kafka
 
+## Community Supported transports
+
+* SQLite ([@colinin](https://github.com/colinin)) ： https://github.com/colinin/DotNetCore.CAP.Sqlite   

src/DotNetCore.CAP/Internal/IMessageSender.Default.cs

@@ -7,7 +7,6 @@ using System.Threading.Tasks;
 using DotNetCore.CAP.Diagnostics;
 using DotNetCore.CAP.Messages;
 using DotNetCore.CAP.Persistence;
-using DotNetCore.CAP.Processor;
 using DotNetCore.CAP.Serialization;
 using DotNetCore.CAP.Transport;
 using Microsoft.Extensions.Logging;

src/DotNetCore.CAP/Internal/ISubscribeDispatcher.Default.cs

@@ -10,7 +10,6 @@ using System.Threading.Tasks;
 using DotNetCore.CAP.Diagnostics;
 using DotNetCore.CAP.Messages;
 using DotNetCore.CAP.Persistence;
-using DotNetCore.CAP.Processor;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;