fixes #4 remove dependency of commons-lang3

Author: stevehu

pom.xml

@@ -67,7 +67,6 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <version.light-4j>1.5.12</version.light-4j>
         <version.jackson>2.9.5</version.jackson>
-        <version.commons-lang3>3.6</version.commons-lang3>
         <version.slf4j>1.7.25</version.slf4j>
         <version.logback>1.2.3</version.logback>
         <version.junit>4.12</version.junit>