docs: updates README to include tagui live new feature

aisingapore#642 - various updates for v5.11 release (aisingapore#646)

aisingapore#642 - various updates for v5.11 release
aisingapore#648 - fix for macOS/Linux Chrome not exiting

readme - improve verbiage on jdk 64-bit (aisingapore#389)

The new Sikuli version used by TagUI v5.0 runs on 64-bit systems only, improve verbiage -

>SikuliX is a Java application, that works on Windows XP+, Mac 10.6+ and most Linux/Unix systems (with 1.1.4+ only 64-Bit systems). For Windows, Mac it is complete and should normally work out of the box. For Linux/Unix systems there are a few prerequisites to be setup.

v4.1 - introduce `variable` (aisingapore#241)

various doc improvements, minor updates and introduction of `variable` to denote use of variable where text is expected. backward compatible with old syntax '+variable+'

TagUI v4.0 - RPA Stable Release

aisingapore#108 - readme update JDK8 setup to before Sikuli setup

v3.1 - integration with R & Python

v3.0 - native languages release

reference samples section and add links to flow samples

update to v2.5 - pre-ai release

- completed releasing v2.5 packaged installations
- release all the additions and changes since august
- put them in production before adding ai integrations