fixed bug related to restoring figs in restoreUserProgress.default()
updated DESCRIPTION and README in prep for release of 2.0
Update DESCRIPTION
small formatting changes to DESCRIPTION and NAMESPACE per devtools
removed weird hidden file
couple more changes to pass devtools::check() -- .Rbuildignore and .gitignore altered
Function to create clean environment whose parent simulates previous user environment.
Removed spurious assignments.
Cleanup, including trivial merge conflict with current master, and some TODO: comments.

Merge branch 'master' into ftr.snapshots

Conflicts:
	R/answerTests.R
Added sample test to inst/tests
Merge remote-tracking branch 'swirldev/master'
incorporated a few unit tests -- run automatically with R CMD CHECK
fixed call to rm() in resume.default() to satisfy R CMD CHECK note -- resume.default: no visible binding for global variable ‘mod’
added examples to all exported functions to comply with CRAN
changed depends to imports and added importsFrom() to NAMESPACE for all imported functions
changed name of toy test file to comply with recommended testthat formatting
made test-all.R only run new style of testthat execution if testthat version is high enough to support -- followed devtools model
updated NAMESPACE and roxygen comments to include importFrom for all required imports
Merge branch 'master' into ftr.snapshots