Add image of commit command
Add image in page
Delete _.swp
Create Gemfile

Create for install github-pages.
Add "solve merge and rebase conflicts" place holder
Add introduction to merge and rebase article
Minor fixes in `solve-merge-and-rebase-conflicts.md`
Add merge section and screen-shots
Add rebase section to solve-merge-and-rebase-conflicts
Fix link
Minor fix in solve-merge-and-rebase-conflicts
Update commit-changes.md

Update comit command image.
Change label command-commit.png
Update commit-changes.md

Update new name command commit image.
Delete Gemfile
Delete Gemfile
Change add.
Merge branch 'add-doc' into gh-pages
Merge branch 'add-doc' of https://github.com/mmsosa/migration-to-git into add-doc
Merge branch 'gh-pages' of https://github.com/mmsosa/migration-to-git into gh-pages