update changes in readme, update jackson to a newer version and update

project version

bug ari4java#78: Support for ARI 3.0.0 / Asterisk 15

This still uses the old code generator.
JAR version is now 0.4.5

Release 0.4.4

Rel 043

Release 0.4.2

Release 0.4.1

Asterisk 14

Release 0.3.4 - ARI 1.9.0 - Asterisk 13.7.0

Release 0.3.2

Release 0.2.2