Use rspec 3.0.0

Ran transpec on spec/ directory for automatic and delicious upgrades.

Also removed minitest dependency since fpm doesn't use it.

fpm.gemspec

@@ -43,9 +43,8 @@ Gem::Specification.new do |spec|
   # For calling functions in dynamic libraries
   spec.add_dependency("ffi") # license: GPL3/LGPL3
 
-  spec.add_development_dependency("rspec") # license: MIT (according to wikipedia)
+  spec.add_development_dependency("rspec", "~> 3.0.0") # license: MIT (according to wikipedia)
   spec.add_development_dependency("insist", "~> 0.0.5") # license: ???
-  spec.add_development_dependency("minitest")
   spec.add_development_dependency("pry")
   spec.add_development_dependency("stud")
 

spec/fpm/package/rpm_spec.rb

@@ -81,7 +81,7 @@ def subject.render_template; @rpmspec = template("rpm.erb").result(binding); end
       end
 
       it "should set the user and group of each file in the RPM" do
-        subject.rpmspec.should include('%defattr(-,root,root,-')
+        expect(subject.rpmspec).to include('%defattr(-,root,root,-')
       end
     end # context
 
@@ -105,7 +105,7 @@ def subject.render_template; @rpmspec = template("rpm.erb").result(binding); end
       end
 
       it "should set the user and group of each file in the RPM" do
-        subject.rpmspec.should include('%defattr(-,some_user,some_group,-')
+        expect(subject.rpmspec).to include('%defattr(-,some_user,some_group,-')
       end
     end # context
   end