update travis

Author: AtsushiSakai

.travis.yml

@@ -3,20 +3,22 @@ python:
   - 3.6
 
 before_install:
-    - wget http://repo.continuum.io/miniconda/Miniconda-latest-Linux-x86_64.sh -O miniconda.sh
+    - wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh
     - chmod +x miniconda.sh
-    - "./miniconda.sh -b"
-    - export PATH=/home/travis/miniconda2/bin:$PATH
-    - conda update --yes conda
-    - sudo rm -rf /dev/shm
-    - sudo ln -s /run/shm /dev/shm
+    - bash miniconda.sh -b -p $HOME/miniconda
+    - export PATH="$HOME/miniconda/bin:$PATH"
+    - hash -r
+    - conda config --set always_yes yes --set changeps1 no
+    - conda update -q conda
+    # Useful for debugging any issues with conda
+    - conda info -a
 
 install:
-  - "pip install scipy"
-  - "pip install numpy"
-  - "pip install matplotlib"
-  - "pip install pandas"
-  - "pip install cvxpy"
+  - pip install scipy
+  - pip install numpy
+  - pip install matplotlib
+  - pip install pandas
+  - pip install cvxpy
   - conda install -y -c cvxgrp cvxpy
   - conda install -y -c anaconda cvxopt