Docs: Updates README for N-Slicer release

Merge pull request #31 from kwan3854/v1.1.4

Bump version to 1.1.4

Refactor position calculation logic

Refactor size normalization logic

Merge remote-tracking branch 'origin/main'

v1.1.3

Merge pull request #30 from kwan3854/18-add-a-feature-that-allows-users-to-di

Add float input fields for border values.

Update README

Update README

v1.1.2

Merge pull request #29 from kwan3854/26-tfsimage-component-inspector-doesnt-w

Fix TfsImage component inspector to enable multi selected, and edited.

Merge pull request #28 from kwan3854/27-slice-editor-shows-whole-sprite-atlas