Resolve #3 - Update plugins to latest version

maven-changes-plugin .................................... 2.9 -> 2.10
maven-checkstyle-plugin .............................. 2.12 -> 2.12.1
maven-jarsigner-plugin ............................... 1.3.1 -> 1.3.2
maven-plugin-plugin ...................................... 3.2 -> 3.3
maven-reactor-plugin ..................................... 1.0 -> 1.1
maven-scm-publish-plugin ................................. 1.0 -> 1.1
maven-shade-plugin ....................................... 2.2 -> 2.3
org.codehaus.mojo:buildnumber-maven-plugin ............... 1.2 -> 1.3
org.codehaus.mojo:findbugs-maven-plugin .............. 2.5.3 -> 2.5.4
org.jacoco:jacoco-maven-plugin  0.7.0.201403182114 -> 0.7.1.201405082137