ignore gradle.properties

Update CHANGELOG.md

Merge pull request nebula-plugins#140 from nebula-plugins/lookup-perf…

…ormance

Address performance issue caused by unnecessary invokeStaticMissingProperty calls

Merge pull request nebula-plugins#139 from rspieldenner/versions

Sanitize version strings

Update readme

Add --info to build commands

[Gradle Release Plugin] - creating tag: '2.2.6'.

[Gradle Release Plugin] - creating tag: '2.2.5'.

[Gradle Release Plugin] - creating tag: '2.2.4'.

[Gradle Release Plugin] - creating tag: '2.2.3'.