Use the same library when Reading and Writing CSV

[abendada]

• Added Escape Character
• Use CSVPrinter when writing CSV Files

[falaki]

@abendada Would you add tests for this and make it pass?

[abendada]

I added a test for escape The test consist of:

• reading a csv file with "" as escape character
• check the parsed content
• save the dataFrame as a temp file without providing an escape character the default (") is used if necessary
• check that temp file is well formed
• read the temp file and check that the content well parsed

Note: quote and escape should have Character as type so nullable.

[falaki]

@abendada left a few comments. Would you please also update the README for the new escape character option, and rebase this? Thanks!