Merge pull request influxdata#256 from influxdata/ross-release-2.5

Update documentation for v2.5

Merge pull request influxdata#213 from influxdata/update-readme-2.4

Update readme to reference v2.4

Merge pull request influxdata#200 from influxdata/update-readme-2.3

Update README to reference v2.3

Updating README Maven version to 2.2.

Merge pull request influxdata#132 from antjori/IgnorePointNullValues

Fix for issue influxdata#117.

InfluxDB Java Client v2.0

Adopt Readme

[maven-release-plugin] copy for tag influxdb-java-1.5

[maven-release-plugin] copy for tag influxdb-java-1.4

[maven-release-plugin] copy for tag influxdb-java-1.3