More succinct output when uploading waterpoints, fixes #75

* Fix spelling of "Succeeded" in `check`.
* Add a flag to `check` to determine whether or not to print.
* Use sys.stdout.write to print "Adding line %d..." every 1000
  waterpoints so `check` print appears on same line.
* Add before and after messages to make things doubly clear.
Even more succinct printing of upload waterpoints (#75)
Merge pull request #79 from taarifa/upload_waterpoints_75

More succinct output when uploading waterpoints, fixes #75

* Fix spelling of "Succeeded" in `check`.
* Add a flag to `check` to determine whether or not to print.
* Use sys.stdout.write to print "Adding line %d..." every 1000
  waterpoints so `check` print appears on same line.
* Add before and after messages to make things doubly clear.