Add version

config/app.php

@@ -2,6 +2,7 @@
 
 return [
 
+	'version' => '0.7',
     /*
     |--------------------------------------------------------------------------
     | Application Environment

resources/views/layout/footer.blade.php

@@ -17,4 +17,15 @@
 	<div class="small-11 small-centered columns">
 		<span><center>© {{date("Y")}} 东北大学先锋网</center></span>
 	</div>
-</footer>
+</footer>
+@if( env('APP_DEBUG') )
+<footer class="row">
+	<div class="small-11 small-centered columns">
+		<span>
+			<center>
+				当前处于调试模式<br>  程序版本：{{ config('app.version')       }}&nbsp;&nbsp; 文件版本：<a href="https://github.com/NEUP-Net-Depart/NEUP-FleaMarket/commit/{{ explode(' ', exec('git log --pretty=oneline -1'))[0]   }}">{{ exec('git log --abbrev-commit --pretty=oneline -1')  }}</a>
+			</center>
+		</span>
+	</div>
+</footer>
+@endif