Update Questionnaire.Rmd

removed the extra 'https://' from the start of the Google docs link. Link now works.
Update Change_threatened_species.Rnw

Does not compile on:

sessionInfo()
## R version 3.0.1 (2013-05-16)
## Platform: x86_64-apple-darwin10.8.0 (64-bit)
##
## locale:
## [1] en_AU.UTF-8/en_AU.UTF-8/en_AU.UTF-8/C/en_AU.UTF-8/en_AU.UTF-8
##
## attached base packages:
## [1] stats     graphics  grDevices utils     datasets  methods   base
##
## other attached packages:
## [1] knitr_1.5
##
## loaded via a namespace (and not attached):
## [1] evaluate_0.5.1 formatR_0.10   stringr_0.6.2  tools_3.0.1
Sys.time()
## [1] "2014-01-08 23:40:24 EST"

without comment marks around <<hide>>
Merge pull request #3 from alistairwalsh/master

Update Questionnaire.Rmd