Dev_guide updated with github workflow

I tried to club the information scattered over the
internet,and made it suit to our need.These are the
resources i used:
1. https://help.github.com/articles/fork-a-repo
2. https://help.github.com/articles/using-pull-requests
3. https://help.github.com/articles/set-up-git
4. https://help.github.com/articles/checking-out-pull-requests-locally

Signed-off-by: Pushpesh Sharma <psharma@redhat.com>
Minor Update
Minor update
Minor update
Adding roadmap section to README

With the transition to Swift-on-File, we are attempting
to provide better guidance to the community as to where the
project is headed.

Signed-off-by: Thiago da Silva <thiago@redhat.com>
fixing a few sentences and adding a new url

Signed-off-by: Thiago da Silva <thiago@redhat.com>
Including Thiago's suggestions
Minor Update
Including Prashant's suggestions
Minor update
Fixing example to differentiate between Swift and SoF

Signed-off-by: Thiago da Silva <thiago@redhat.com>
Merge pull request #22 from thiagol11/project_roadmap

Project roadmap
fixed some wording on the example paragraph
Merge pull request #10 from pushpesh/devguide

Dev_guide updated with github workflow
remove reference to fedora 19