fix maven enforcer plugin warning
Merge pull request #11 from heuermh/enforcer-warning-fix

Fix maven enforcer plugin warning
update default readsetId.
Add a simple r client
Update README.md
Style fixes
Add an example for plotting coverage
Add pagination support, improve default graphs

The default graph now shows strand and coverage data, and also labels
the x axis.
Remove unneeded brs
Add basic snp lookups to the browser

Uses the opensnp.org api