chore included missing files

.travis.yml

@@ -1,9 +1,12 @@
 language: cpp
-
+sudo: true
 os:
     - linux
     - osx
 
+dist: bionic
+osx_image: xcode12
+
 compiler:
     - gcc
     - clang
@@ -19,10 +22,10 @@ addons:
     packages:
       - libosmium
       - boost
-    update: true
 
 before_install:
   - export LD_LIBRARY_PATH=$(if [[ $CXX == "clang++" ]]; then echo -n '/usr/local/clang/lib'; fi)
+  - git clone https://github.com/mapbox/protozero.git && cd protozero && cmake . -DINSTALL_GDALCPP=ON -DINSTALL_UTFCPP=ON && sudo make -j4 install && cd ..
 
 before_script:
   - mkdir build