update and clean up config to API v3

[coby2023t]

update and clean up config to API v3
got problem pulling po files from transifex, the docs and sample config did not apply to the APIv3, that confused new comer

[rffontenelle]

@coby2023t What is exactly the error you're seeing?

[coby2023t]

the original setting is not working as is.
https://developers.transifex.com/docs/cli updated the working setting, the repo stayed old one.

[rffontenelle]

FYI, tx init generates .tx/config with https://app.transifex.com. If the it is not correct, that should be changed as well.

$ tx init

Successful creation of '.tx/config' file
$ cat .tx/config 
[main]
host = https://app.transifex.com
$ tx --version
TX Client, version=1.6.11

[coby2023t]

got the clue, the problem was, upgrade from version 0.14.4 to 1.6.11, the default ~/.transifexrc also changed and make problems.