adds travis-ci integration

.travis.yml

+language: python
+matrix:
+  include:
+  - python: 2.7
+    env:
+    - secure: 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
+    - secure: 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
+    - BOB_DOCUMENTATION_SERVER=https://www.idiap.ch/software/bob/docs/latest/bioidiap/%s/master
+    - BOB_UPLOAD_WHEEL="--universal"
+  - python: 3.3
+  - python: 3.4
+  - python: 3.5
+before_install:
+# - sudo add-apt-repository -y ppa:biometrics/bob
+- sudo apt-get update -qq
+- sudo apt-get install -qq --force-yes python-ipdb python3-ipdb dvipng texlive-latex-base texlive-latex-extra texlive-math-extra texlive-latex-recommended texlive-fonts-recommended
+- pip install --upgrade pip
+- pip install --find-links https://www.idiap.ch/software/bob/wheels/travis/ --use-wheel sphinx nose numpy scipy matplotlib coverage
+- pip install --find-links https://www.idiap.ch/software/bob/wheels/travis/ --use-wheel --pre -r requirements.txt coveralls
+install:
+- python bootstrap-buildout.py
+- ./bin/buildout buildout:develop=. buildout:extensions=bob.buildout buildout:auto-checkout=
+script:
+# - ./bin/python -c 'import pkg_resources; from bob.bio.base import get_config; print(get_config())'
+- ./bin/coverage run --source=gridtk ./bin/nosetests -sv
+- ./bin/sphinx-build -b doctest doc sphinx
+- ./bin/sphinx-build -b html doc sphinx
+after_success:
+- coveralls
+- wget https://raw.githubusercontent.com/bioidiap/bob.extension/master/scripts/upload-{sphinx,wheel}.sh
+- chmod a+x upload-sphinx.sh upload-wheel.sh
+- ./upload-sphinx.sh
+- ./upload-wheel.sh