Update README.md

I set the version 1.0.0
I add a protection to not try to upload a file that does not exist
Update the uploadFileSession method in the example
Merge branch 'master' into develop
Merge pull request #44 from owncloud/OC-4356_Background_server_library

I add a protection to not try to upload a file that does not exist
I added a flag to use cookies or not. I added a method to check if a server support cookies or not. I refactor how to check if a server is higher than other in a single method to be used on the check of cookies and on the share support API check
I fix a compilation error
I change the contant to use the k_version_support_cookies
Checking the time out of travis
Merge pull request #45 from owncloud/OC-4595_cookies_two_operation_same_time_library

Oc 4595 cookies two operation same time library
Merge branch 'develop' into OC-3572_background_downloads