Kill the sudo again w/ help from web search

go back to hard version of installing cmake since we need a newer
version than travis currently has
diff --git a/.travis.yml b/.travis.yml
index 8b6843f..6a5f914 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,12 +2,15 @@
 compiler:
   - gcc
 before_install:
-  - sudo pip install cpp-coveralls
+  - pip install cpp-coveralls --user
+  - wget https://www.cmake.org/files/v3.3/cmake-3.3.1-Linux-x86_64.tar.gz -O /tmp/cmake.tar.gz --no-check-certificate
+  - tar xzf /tmp/cmake.tar.gz
+  - export PATH=$PWD/cmake-3.3.1-Linux-x86_64/bin/:$PATH
+  - export LD_LIBRARY_PATH=$PWD/build/dist/lib:$LD_LIBRARY_PATH
+
 addons:
   apt:
     packages:
-    - cmake
-    - cmake-data
     - libssl-dev
 script:
   - mkdir build