- Update `installpsh-suse.sh` to work with the .tar.gz binary archive.
- Remove `download.sh` as it's not used anywhere now. (checked with PowerShellGet and OneGet, they are using a local copy of download.sh).
Also consolidate install.sh with download.sh;
remove unnecessary files;
create README.md in install.
Ran dos2unix tool to cleanup extra carriage returns at the end of lines
