Updated travis config

Author: Tom Van Herreweghe

.travis.yml

@@ -10,6 +10,7 @@ before_script:
   - composer install --dev --prefer-source
 
 before_install:
-  - cd /tmp && wget http://www.sno.phy.queensu.ca/~phil/exiftool/Image-ExifTool-9.32.tar.gz
+  - wget http://www.sno.phy.queensu.ca/~phil/exiftool/Image-ExifTool-9.32.tar.gz
   - tar -zxvf Image-ExifTool-9.32.tar.gz
   - cd Image-ExifTool-9.32 && perl Makefile.PL && make test && sudo make install
+  - cd ../ && rm -rf Image-ExifTool-9.32*