CI: Only push binaries for develop branch builds

... for now.
Syntax was confusing Travis CI, AppVeyor is reporting 401,
so lets see if this change at least fixes Travis.

If this doesn't work, it might be that @raysan5's token is required.

.travis.yml

@@ -54,6 +54,4 @@ deploy:
   skip_cleanup: true
   on:
     repo: raysan5/raylib
-    branch:
-      - develop
-      - master
+    branch: develop

appveyor.yml

@@ -52,8 +52,7 @@ artifacts:
   - path: 'build\*.zip'
 
 deploy:
-  description: 'Automatic build by CI'
-  provider: GitHub
+  - provider: GitHub
     auth_token:
       secure: lqkfPGZPK828Mmopbicrng08QaaQXAshp0a9E3bMXt8+hpA8vCfDAT3jgU8kaSsW
     artifact: /.*\.zip/
@@ -61,7 +60,5 @@ deploy:
     prerelease: false
     force_update: true
     on:
-    branch: 
-      - master
-      - develop
+      branch: develop
       appveyor_repo_tag: true        # deploy on tag push only