added ggmap, google analytics, edits to authentication, scraping
updated readme with xml2r pkg, removed index.md as redundant
imguR is using an older version of Imgur API

`knitr::imgur_upload()` uses the last version of API
Fixed rAltmetric not being on CRAN. Closes issue #5
Merge pull request #7 from yihui/patch-1

imguR is using an older version of Imgur API
This should fix #9. Please reopen if not.
Merge branch 'master' of https://github.com/ropensci/webservices
Moved edit me to top of page as per @ranmathv suggestion.
Update OAIHarvester and dvn references
Merge pull request #10 from leeper/patch-1

Update OAIHarvester and dvn references
added servr and httpuv pkgs, fixes #8
added pitchrx, fixes #4, fixes #6
updated servr pkg with CRAN url
merged from master