modify the execution rights

Author: skvark

travis/install-ninja.sh

@@ -1,2 +1,7 @@
-wget https://github.com/ninja-build/ninja/releases/download/v1.7.2/ninja-linux.zip -O ninja.zip; unzip ninja.zip; rm ninja.zip
-export PATH=$PATH:$(pwd)
+wget https://github.com/ninja-build/ninja/releases/download/v1.7.2/ninja-linux.zip -O ninja.zip
+unzip ninja.zip
+rm ninja.zip
+chmod +x ninja
+ls -la
+export PATH=$PATH:$(pwd)
+echo $PATH