update

Signed-off-by: liangkangnan <liangkangnan@163.com>

README.md

@@ -64,7 +64,7 @@ tinyriscv的整体框架如下：
 
 # 4.未来计划
 
-1. 支持中断；
+1. 支持总线；
 2. ......
 
 # 5.更新记录
@@ -75,4 +75,6 @@ tinyriscv的整体框架如下：
 
 2020-02-23：支持在Xilinx Artix-7平台上运行。详见[tinyriscv_vivado](https://gitee.com/liangkangnan/tinyriscv_vivado)。
 
-2020-03-01：支持JTAG，配合openocd可进行内存读写。JTAG文档参考[深入浅出RISC-V调试](https://gitee.com/liangkangnan/deep_in_riscv_debug)。
+2020-03-01：支持JTAG，配合openocd可进行内存读写。JTAG文档参考[深入浅出RISC-V调试](https://gitee.com/liangkangnan/deep_in_riscv_debug)。
+
+2020-03-08：支持中断，为此增加了timer模块来验证。

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