Adds new files that support Google OAuth capability
 On branch master
 Changes to be committed:

	new file:   gspread/googoauth.py
	new file:   gspread/store.py
	new file:   logs/gOAuth.log
	new file:   test_gOAuth.py
	new file:   test_parms.py
.gitignore now ignores editor backup files
 On branch master
 Your branch is ahead of 'origin/master' by 1 commit.

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	modified:   .gitignore
Import the 'connect' function, which parallels the 'login' function, but uses Google OAuth2, rather than UID/PWD
 On branch master
 Your branch is ahead of 'origin/master' by 2 commits.

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   (use "git reset HEAD <file>..." to unstage)

	modified:   gspread/__init__.py
Modifies the 'request' function, adding a trap for OAuth2 access token expiry. Asks the googoauth module to attempt to refresh.
 On branch master
 Your branch is ahead of 'origin/master' by 3 commits.

 Changes to be committed:

	modified:   gspread/httpsession.py
Modifies the 'Client' class constructor to handle optional Google OAuth2 connections.  Adds connection management methods to the class, and connect/disconnect utility functions.
 On branch master
 Your branch is ahead of 'origin/master' by 4 commits.

 Changes to be committed:

	modified:   gspread/client.py