initial commit
adding nodes
edited README
Merge pull request #19 from gargshashank5/readme

edited README
Update README.md
editted comments and added TODO
comment line was long.
adds addnode feature
minor changes made.
Merge pull request #20 from gargshashank5/selfedge

Adds "Add nodes" feature
changes in addnodes
Merge pull request #21 from gargshashank5/selfedge

changes in addnodes