Fix loading in R

[danfowler]

When trying to read with R library (https://github.com/ropenscilabs/datapkg), I ran into these problems:

> library(datapkg)
> datapkg_read()
Reading file /Users/dan/open_knowledge/frictionless_data/DObsiSS/DObsiSS_2.0.csv
Warning: 179 parsing failures.
row col   expected     actual
  1  -- 14 columns 48 columns
  2  -- 14 columns 48 columns
  3  -- 14 columns 48 columns
  4  -- 14 columns 48 columns
  5  -- 14 columns 48 columns
... ... .......... ..........
See problems(...) for more details.

Related to #2