installed twig into /vendor directory; rejiggered twig-cache to be better organized
Merge branch 'master' into 207_composer_twig

* master:
  fixed error in resizing images
Merged in recent master changes
Merge branch 'master' into 207_composer_twig

* master:
  resetting default $dirname to 'views' instead of array
  completed tests for loading from alternate locations
  applying array_map instead of single-line foreach
  allowing $dirname to be an array
  More tests and debugging for loaders
  3.7.3 fails test b/c of missing twenty fourteen
  first tests for loader for child and parent themes
  wrote test for filtering and PW detection
remove echoes; add composer install to travis
Merge branch 'master' into 207_composer_twig

* master:
  finished remainder of tests. confirm that this closes #154
  Passes test for international and normal twig functions
  Confirmed output of date filters. Compiling/rendering of strings now gets proper filters from Timber
  typo
  pass default twig date filter through wordpress date_i18n function
Removed PHP Router from code and added to composer; wrote tests to verify loading
added asm89/twig-cache-extension to composer.json
update read me with install instructions
Made Timber autoload dependencies using Composer generated autoloader

Added include for `vendor/autoload.php` at the start of main plugin file.
Removed manual include and init of Twig's own autoloader and manual include of Router.
Rewrote unit test for Router class to simply assert that the class is available (instead of checking that it's unavailable before registering the first route)
Removed CacheExtension from repo and cache autoloader
Merge branch 'mgmartel-227_composer_cache_extension' into 50_composer

* mgmartel-227_composer_cache_extension:
  Removed CacheExtension from repo and cache autoloader
  Made Timber autoload dependencies using Composer generated autoloader
completed merge of 50_composer, 227 and 229
changed autoload to use include_once so that if it fails, we can give specific composer install error message later