updated docs and plugin tests

- plugin successful tested with 12.1
- using 12.0 build 56.20 for traivs ci

.travis.yml

@@ -4,8 +4,8 @@ services:
 
 before_install:
   - sudo apt-get -qq update
-  - docker pull store/citrix/netscalercpx:11.1-53.11
-  - docker run -e EULA=yes -dt -p 22 -p 80 -p 161/udp --ulimit core=-1 --cap-add=NET_ADMIN store/citrix/netscalercpx:11.1-53.11
+  - docker pull store/citrix/netscalercpx:12.0-56.20
+  - docker run -e EULA=yes -dt -p 22 -p 80 -p 161/udp --ulimit core=-1 --cap-add=NET_ADMIN store/citrix/netscalercpx:12.0-56.20
 
 install:
   - sudo apt-get install -y sshpass cpanminus libwww-perl liblwp-protocol-https-perl libjson-perl

README.md

@@ -377,11 +377,11 @@ http://NSIP/nitro-rest.tgz (where NSIP is the IP address of your NetScaler appli
 
 ## Tested Firmware
 
-Tested with NetScaler 10.5, 11.0, 11.1 and 12.0. The plugin should work with all available firmware builds.
+Tested with NetScaler 10.5, 11.0, 11.1, 12.0 and 12.1. The plugin should work with all available firmware builds.
 
 ## Automated Tests
 
-Every commit and pull request in this repository will trigger a continuous integration test with [Travis CI](https://travis-ci.org/slauger/check_netscaler). The test starts a NetScaler CPX instance (currently build 11.1-53.11) and runs `tests/travis_test.sh` against the container.
+Every commit and pull request in this repository will trigger a continuous integration test with [Travis CI](https://travis-ci.org/slauger/check_netscaler). The test starts a NetScaler CPX instance (currently build 12.0-56.20) and runs `tests/travis_test.sh` against the container.
 
 Please add tests if you add new commands to this plugin. Be aware that a NetScaler CPX is very limited in it's features and not all checks of this plugin will work against a CPX instance (e.g. `hwinfo`, `ntp`, ...).