Fix skimage download link

appveyor.yml

@@ -22,7 +22,7 @@ environment:
        WP_URL: 'https://github.com/winpython/winpython/releases/download/1.3.20160209/WinPython-32bit-3.5.1.2.exe'
        WP_CRC: '172d19a743ccfaf55af779d15f29f67fca83a46f08b0af855dfaf809b4184c0d'
        DEPS: "numpy scipy matplotlib>=2.0.2 ipython h5py sympy scikit-learn dill setuptools natsort scikit-image cython lxml ipyparallel dask=0.13"
-    
+
      - PYTHON: "C:\\Miniconda35-x64"
        PYTHON_VERSION: "3.5.x"
        PYTHON_MAJOR: 3
@@ -39,7 +39,7 @@ environment:
        PYTHON_ARCH: "32"
        CONDA_PY: "36"
        DEPS: "numpy scipy matplotlib>=2.0.2 ipython h5py sympy scikit-learn dill setuptools natsort scikit-image cython lxml ipyparallel dask=0.13"
-    
+
      - PYTHON: "C:\\Miniconda36-x64"
        PYTHON_VERSION: "3.6.x"
        PYTHON_MAJOR: 3
@@ -135,9 +135,9 @@ before_deploy:
   # Install scikit-image from Christoph Gohlke binaries repository
   - cinst wget
   - ps: Add-AppveyorMessage "Downloading scikit-image..."
-  - ps: if($Env:PYTHON_ARCH -eq "64") {$Env:SCIKIT_IMAGE="scikit_image-0.13.0-cp35-cp35m-win_amd64.whl"} else {$Env:SCIKIT_IMAGE="scikit_image‑0.13.0‑cp35‑cp35m‑win32.whl"}
+  - ps: if($Env:PYTHON_ARCH -eq "64") {$Env:SCIKIT_IMAGE="https://www.dropbox.com/s/1xn8mgudmtph19i/scikit_image-0.13.0-cp35-cp35m-win_amd64.whl?dl=1"} else {$Env:SCIKIT_IMAGE="https://www.dropbox.com/s/6hwotxy9hoalj25/scikit_image-0.13.0-cp35-cp35m-win32.whl?dl=1"}
   - "ECHO %SCIKIT_IMAGE%"
-  - "%CMD_IN_ENV% wget http://www.lfd.uci.edu/~gohlke/pythonlibs/tuoh5y4k/%SCIKIT_IMAGE% --header User-Agent:Chrome/23.0.1271.97"
+  # - "%CMD_IN_ENV% wget http://www.lfd.uci.edu/~gohlke/pythonlibs/tuoh5y4k/%SCIKIT_IMAGE% --header User-Agent:Chrome/23.0.1271.97"
   - "%CMD_IN_ENV% pip install %SCIKIT_IMAGE%"
   - "%CMD_IN_ENV% pip install --upgrade tqdm notebook cython ipython configobj start_jupyter_cm ipywidgets ipyparallel sympy pytest"
   # uninstall and reinstall matplotlib to get the 2.0 version without using --upgrade option (to avoid upgrading numpy and breaking scipy...)