Fix failing tests. Replace ruby to 2.1.1 in travis. Update travis config

spec/models/conference_spec.rb

@@ -1,60 +1,72 @@
 require 'spec_helper'
 
 describe Conference do
-  before do
-    @conference = create(:conference)
-  end
-  
+
+  let(:subject) { create(:conference) }
 
   describe "#registration_open?" do
-  	context "closed registration" do
-  	  it "#registration_open? is false" do
-  	    expect(@conference.registration_open?).to be false
-      end
-  	end
 
-  	context "open registration" do
-  	  before do
-    	@conference.registration_start_date = Date.today - 1
-    	@conference.registration_end_date = Date.today + 7
-  	  end
-  	  it "#registration_open? is true" do
-  		expect(@conference.registration_open?).to be true
-  	  end
-  	end
+    context "closed registration" do
+
+      it "#registration_open? is false" do
+        expect(subject.registration_open?).to be false
+      end
+
+    end
+
+    context "open registration" do
+
+      before do
+        subject.registration_start_date = Date.today - 1
+        subject.registration_end_date = Date.today + 7
+      end
+
+      it "#registration_open? is true" do
+        expect(subject.registration_open?).to be true
+      end
+
+    end
+
   end
 
   describe "#cfp_open?" do
-  	context "closed cfp" do
-  	  it "#cfp_open? is false" do
-  	    expect(@conference.cfp_open?).to be false
-      end
-  	end
 
-  	context "open cfp" do
-  	  before do
-  	  	@cfp = create(:call_for_papers)
-  	  	@conference.call_for_papers = @cfp
-  	  end
-  	  it "#registration_open? is true" do
-  		expect(@conference.cfp_open?).to be true
-  	  end
-  	end
+    context "closed cfp" do
+
+      it "#cfp_open? is false" do
+        expect(subject.cfp_open?).to be false
+      end
+
+    end
+
+    context "open cfp" do
+
+      before do
+        subject.call_for_papers = create(:call_for_papers)
+      end
+
+      it "#registration_open? is true" do
+        expect(subject.cfp_open?).to be true
+      end
+
+    end
+
   end
 
   describe "#user_registered?" do
-  	before do
-  		@user = create(:user)
-  	end
-  	context "user not registered" do
-  	  it "#user_registered? is false" do
-  	    expect(@conference.user_registered? @user).to be false
-      end
-  	end
 
-  	context "user registered" do
-  	  pending "isn't tested yet"
-  	end
+    let(:user) { create(:user) }
+
+    context "user not registered" do
+      it "#user_registered? is false" do
+        expect(subject.user_registered? user).to be false
+      end
+    end
+
+    context "user registered" do
+      pending "isn't tested yet"
+    end
+
   end
  
 end