[enhancement] configure pom.xml to generate reports.

Added configurations for reporting plugins below:
- maven-jxr-plugin
- maven-javadoc-plugin
- javancss-maven-plugin
- jdepend-maven-plugin
- taglist-maven-plugin
- maven-checkstyle-plugin
- maven-pmd-plugin
- findbugs-maven-plugin
- maven-surefire-report-plugin
- jacoco-maven-plugin

In addition, when the application releases, following reporting plugins will be enabled.
- maven-changelog-plugin
- maven-changes-plugin

This commit deal a issue #7
Merge pull request #8 from yusukemasuda/feature/#7

[enhancement] resolves #7 - Checked the reports are generated by maven command executing.