Merge pull request #703 from swagger-api/logback_config

added logback xml config file

Author: HugoMario

src/main/resources/logback.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+    <logger name="io.swagger" level="info"/>
+    <root level="error">
+        <appender-ref ref="STDOUT"/>
+    </root>
+</configuration>