Update version number to 0.6.0

Author: junichi11

php.ci.repository/nbproject/project.properties

@@ -3,4 +3,4 @@ javac.compilerargs=-Xlint -Xlint:-serial
 license.file=../license.txt
 nbm.homepage=http://kenai.com/projects/nbphpci/pages/Home
 nbm.module.author=Junji Takakura
-spec.version.base=0.5.1
+spec.version.base=0.6.0

php.ci/nbproject/project.properties

@@ -3,5 +3,5 @@ javac.compilerargs=-Xlint -Xlint:-serial
 license.file=../license.txt
 nbm.homepage=http://kenai.com/projects/nbphpci/pages/Home
 nbm.module.author=Junji Takakura
-spec.version.base=0.5.1
+spec.version.base=0.6.0
 project.license=cddl-netbeans-sun