[DE-1040] documentation (#12)

* documentation

* demo: added basic operations

* documentation

* review

* review

* review

* review

* review

* review

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Author: rashtao

CHANGELOG.md

@@ -6,3 +6,95 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.0.3] - 2020-11-16
+
+### Fixed
+- #68 Create Graph Variables collection if not present
+- Bump junit from 4.12 to 4.13.1 
+
+## [2.0.2] - 2019-03-22
+
+### Added
+ - Collection name prefix is now optional to support existing database collections/graphs
+ - Maven surefire runs supported tests
+ - Changelong file
+
+### Fixed
+ - Corrected information on ID management
+ - Edge.getEdgeVertices() returns correct edges
+ - Deleting a Property deletes its incoming edges
+ - Fixed Javadocs
+
+## [2.0.1] - 2018-12-25
+### Fixed
+ - Spelling mistakes
+ - ConfigurationBuilder sets gremlim.graph property
+
+## [2.0.0] - 2018-10-30
+### Added
+ - Official Gremlin Test Suite is used for testing
+### Changed
+ - Move to tinkerpop 3
+ - Move to ArangoDB 3.3
+ - Move to ArangoDB Java driver 5.0
+
+## [1.0.15] - 2016-08-29
+### Fixed
+ - #25
+
+## [1.0.14] - 2016-04-22
+### Added
+ - Changed to Apache httpclient 4.2.5
+
+## [1.0.13] - 2016-03-25
+### Added
+ - Updated to ArangoDB java client 2.7.3
+
+## [1.0.12] - 2016-01-08
+### Added
+ - Update to java driver 2.7.0
+
+## [1.0.11] - 2015-07-09
+### Added
+ - Support of ArangoDB 2.6
+
+## [1.0.10] - 2015-05-23
+### Changed
+ - Changed version to 1.0.10 for Blueprints 2.6
+
+## [1.0.9] - 2014-08-29
+### Added
+ - Updates for new graph document format in arangodb 2.2
+
+## [1.0.8] - 2014-06-06
+### Changed
+ - Changes for gremlin 2.5.0
+
+## [1.0.7] - 2014-03-14
+### Fixed
+ - Honor batch size in BatchGraph
+ - Honor client connection configuration options
+
+## [1.0.6] - 2014-03-11
+### Fixed
+ - Fixed setup
+
+## [1.0.5] - 2014-02-21
+### Added
+ - Updates for ArangoDBGraph.query()
+
+## [1.0.3] - 2013-02-12
+### Added
+ - Default logging config
+
+## [1.0.2] - 2013-02-06
+### Added
+ - Rexter config
+
+## [1.0.1] - 2013-02-05
+### Changed
+ - Changed caching of changed elements
+
+## [1.0.0] - 2013-02-04
+### Added
+ - Initial Version