Edits to make novice R lesson 01 more similar to novice Python lesson 01.
Reflect current branding for Anaconda - no more CE
Typo fixes.
Added some extra explanation on function calls.
Removed closed parentheses when referring to functions in the text.
read.table -> read.csv in novice R lesson 01.
parameter -> argument in novice R lesson 01.
In novice R lesson 01, created new object to store matrix instead of converting data frame. Also removed heatmaps, which can be introduced later.
Load first 5 lines of csv file so that it is always in sync with the data file.
Added more explanation of MARGIN argument to apply.
Removed mention of matrix by performing mathematical operations on the columns.
Added description of labels to CONTRIBUTING.md
removed require() as means to load library
manually added YAML header to markdown document
Merge pull request #669 from chendaniely/r-library-require

removed require() as means to load library
Updated directions for labels to reflect different levels of write access.
Merge pull request #651 from deeplycloudy/master

Reflect current branding for Anaconda - no more CE
Added "in" and "out" code blocks in the regex lessons.

Also added the third notebook with 'evil' data in it.
Merge pull request #650 from ctjacobs/fix-regex-markdown

Fix regex markdown
Updated description of question label.