[FIXUP] Final form

I think this is the route I am going to go with, and will most likely
rebase these [FIXUP] and [DEBUG] commits out.

It makes use of the `bundle install` that is already done by travis
anyway (since we did a `before_install` instead of overwriting the
`install`, this was being done when I switched the language back to
`ruby`), it makes for a simpler diff to digest.

Also... I think the `bundle exec rake ...` might be required...

Author: NickLaMuro

.travis.yml

@@ -15,12 +15,8 @@ env:
     - RVM_RUBY_VERSION=2.6
     - RVM_RUBY_VERSION=ruby-head
 
-before_install:
-- sudo --help
-- sudo -i which ruby
-- sudo -i which rake
-- bundle install
-- rake --trace test:docker:$RVM_RUBY_VERSION:build
+after_install:
+- bundle exec rake test:docker:$RVM_RUBY_VERSION:build
 
 script:
-- rake --trace test:docker:$RVM_RUBY_VERSION
+- bundle exec rake test:docker:$RVM_RUBY_VERSION

Rakefile

@@ -14,16 +14,11 @@ end
 # Ruby Extension
 # ==========================================================
 
-begin
-  require 'rake/extensiontask'
-  Rake::ExtensionTask.new('stackprof', GEMSPEC) do |ext|
-    ext.lib_dir = 'lib/stackprof'
-  end
-  task :build => :compile
-rescue LoadError => e
-  # rake-compiler not installed.  No problem if on CI.
-  raise e unless ENV["TRAVIS"]
+require 'rake/extensiontask'
+Rake::ExtensionTask.new('stackprof', GEMSPEC) do |ext|
+  ext.lib_dir = 'lib/stackprof'
 end
+task :build => :compile
 
 # ==========================================================
 # Testing