Update .travis.yml

.travis.yml

@@ -22,11 +22,11 @@ env:
 
 install:
   - if [[ $TRAVIS_OS_NAME == osx ]]; then
-      pip3 install --upgrade paddlepaddle
-      pip3 install -r requirements.txt
+      pip3 install --upgrade paddlepaddle;
+      pip3 install -r requirements.txt;
     else
-      pip install --upgrade paddlepaddle
-      pip install -r requirements.txt
+      pip install --upgrade paddlepaddle;
+      pip install -r requirements.txt;
     fi
 
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