Merge pull request #103 from ehsteve/master

Jack's edits
Update abstract.tex
Super minor edits
Merge pull request #104 from ayshih/master

Super minor edits
Submit paper to CSD
hypernate ever-growing in intro
update built paper
Final submission
Merge pull request #105 from Cadair/master

Consider mergeing this the Good to Go
all single quotes to double quotes in code
update to gitignore for Tex and OSX
Merge pull request #124 from ehsteve/code_updates

Simple code updates and gitignore
Make reference list consistent and in one bib file.

Closes sunpy.sunpy-0.4-paper/#121
Add Python package references to introduction.

Closes sunpy/sunpy-0.4-paper#119
Merge pull request #125 from Cadair/references

References
small changes to address #122