WIP: Avoid deploy in .travis

Also install cmake with pip (3.12)

Error:
```
+twine upload --repository-url https://test.pypi.org/legacy/ --username albarji dist/prox_tv-3.3.0-cp27-cp27mu-manylinux1_x86_64.whl
Enter your password:
No output has been received in the last 10m0s, this potentially indicates a stalled build or something wrong with the build itself.
Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received
```

.travis.yml

@@ -53,7 +53,7 @@ install:
 script:
 - source activate testenv
 - nosetests --with-coverage --cover-package=prox_tv
-- bash -x ./.travis/deploy.sh
+# - bash -x ./.travis/deploy.sh
 # Build C lib with CMake
 - mkdir -p build && cd build
 - cmake -DENABLE_TESTING:BOOL=ON ../

.travis/installconda.sh

@@ -22,6 +22,7 @@ export PATH="$HOME/miniconda3/bin:$PATH"
 rm miniconda.sh
 conda config --set always_yes yes --set changeps1 no
 conda update -q conda
+pip install cmake
 
 # Create environment with specific python version
 conda create -n testenv python=${TRAVIS_PYTHON_VERSION}