Skip the :nocov: comments.

When using the `nocov` comment token the start and stop tokens are considered lines to be covered. Addresses the following issues:

colszowka#468

colszowka#527

features/config_nocov_token.feature

@@ -36,7 +36,7 @@ Feature:
       | lib/faked_project/meta_magic.rb         | 100.0 %  |
       | lib/faked_project/nocov.rb              | 100.0 %  |
 
-    And there should be 5 skipped lines in the source files
+    And there should be 7 skipped lines in the source files
 
     And the report should be based upon:
       | Unit Tests |
@@ -73,7 +73,7 @@ Feature:
       | lib/faked_project/meta_magic.rb         | 100.0 %  |
       | lib/faked_project/nocov.rb              | 100.0 %  |
 
-    And there should be 5 skipped lines in the source files
+    And there should be 7 skipped lines in the source files
 
     And the report should be based upon:
       | Unit Tests |

features/skipping_code_blocks_manually.feature

@@ -35,7 +35,7 @@ Feature:
       | lib/faked_project/meta_magic.rb         | 100.0 %  |
       | lib/faked_project/nocov.rb              | 100.0 %  |
 
-    And there should be 5 skipped lines in the source files
+    And there should be 7 skipped lines in the source files
 
     And the report should be based upon:
       | Unit Tests |
@@ -64,7 +64,7 @@ Feature:
       | lib/faked_project/meta_magic.rb         | 100.0 %  |
       | lib/faked_project/nocov.rb              | 100.0 %  |
 
-    And there should be 5 skipped lines in the source files
+    And there should be 7 skipped lines in the source files
 
     And the report should be based upon:
       | Unit Tests |

lib/simplecov/source_file.rb

@@ -176,6 +176,7 @@ def process_skipped_lines!
       lines.each do |line|
         if line.src =~ /^([\s]*)#([\s]*)(\:#{SimpleCov.nocov_token}\:)/
           skipping = !skipping
+          line.skipped!
         elsif skipping
           line.skipped!
         end

spec/file_list_spec.rb

@@ -19,16 +19,16 @@
       expect(subject.missed_lines).to eq(3)
     end
 
-    it "has 19 never lines" do
-      expect(subject.never_lines).to eq(19)
+    it "has 17 never lines" do
+      expect(subject.never_lines).to eq(17)
     end
 
     it "has 14 lines of code" do
       expect(subject.lines_of_code).to eq(14)
     end
 
-    it "has 3 skipped lines" do
-      expect(subject.skipped_lines).to eq(3)
+    it "has 5 skipped lines" do
+      expect(subject.skipped_lines).to eq(5)
     end
 
     it "has the correct covered percent" do

spec/source_file_spec.rb

@@ -42,12 +42,12 @@
         expect(subject.missed_lines.map(&:line)).to eq([8])
       end
 
-      it "returns lines number 1, 5, 6, 9, 10, 11, 15, 16 for never_lines" do
-        expect(subject.never_lines.map(&:line)).to eq([1, 5, 6, 9, 10, 11, 15, 16])
+      it "returns lines number 1, 5, 6, 9, 10, 16 for never_lines" do
+        expect(subject.never_lines.map(&:line)).to eq([1, 5, 6, 9, 10, 16])
       end
 
-      it "returns line numbers 12, 13, 14 for skipped_lines" do
-        expect(subject.skipped_lines.map(&:line)).to eq([12, 13, 14])
+      it "returns line numbers 11, 12, 13, 14, 15 for skipped_lines" do
+        expect(subject.skipped_lines.map(&:line)).to eq([11, 12, 13, 14, 15])
       end
 
       it "has 80% covered_percent" do