Addition of version number to about.go

[7wik-pk]

Description

Version number is added as a hardcoded string (groferVersion) to About.text within the About widget, but it isn't initialized. While building, the version must be injected (as a string) to the package level variable groferVersion to avoid display of an empty string in place of version.

Fixes #117

Type of change

Please delete options that are not relevant.

• [x] New feature (non-breaking change which adds functionality)
• [x] This change requires a documentation update

Checklist:

• [ ] I have read the contribution guidelines and followed it as far as possible.
• [ ] I have performed a self-review of my own code (if applicable)
• [x] I have commented my code, particularly in hard-to-understand areas (if applicable)
• [ ] I have run go fmt on my code (reference)
• [ ] I have made corresponding changes to the documentation (if applicable)
• [ ] My changes generate no new warnings
• [ ] Any dependent and pending changes have been merged and published

[7wik-pk]

righto, I've initialized groferVersion to 1.3.0 for now.

[Gituser143]

@7wik-pk Thank you for your contribution! I'll let either @Samyak2 or @MadhavJivrajani merge this.