Include trailing newline in response headers to match browsers.

- Some libraries are relying on it existing, even though the specs
  doesn't say it should.

Fix #91

lib/mock-ajax.js

@@ -257,7 +257,7 @@ getJasmineRequireObj().AjaxFakeRequest = function() {
           responseHeaders.push(this.responseHeaders[i].name + ': ' +
             this.responseHeaders[i].value);
         }
-        return responseHeaders.join('\r\n');
+        return responseHeaders.join('\r\n') + '\r\n';
       },
 
       responseText: null,

spec/fakeRequestSpec.js

@@ -535,8 +535,8 @@ describe('FakeRequest', function() {
     request1.respondWith({ status: 200, responseHeaders: { 'X-Foo': 'bar' } });
     request2.respondWith({ status: 200, responseHeaders: { 'X-Baz': 'quux' } });
 
-    expect(request1.getAllResponseHeaders()).toBe('X-Foo: bar');
-    expect(request2.getAllResponseHeaders()).toBe('X-Baz: quux');
+    expect(request1.getAllResponseHeaders()).toBe("X-Foo: bar\r\n");
+    expect(request2.getAllResponseHeaders()).toBe("X-Baz: quux\r\n");
   });
 
   it('retrieves all response headers', function() {
@@ -553,7 +553,7 @@ describe('FakeRequest', function() {
       ]
     });
 
-    expect(request.getAllResponseHeaders()).toBe("X-Header-1: foo\r\nX-Header-2: bar\r\nX-Header-1: baz");
+    expect(request.getAllResponseHeaders()).toBe("X-Header-1: foo\r\nX-Header-2: bar\r\nX-Header-1: baz\r\n");
   });
 
   it('sets the content-type header to the specified contentType when no other headers are supplied', function() {
@@ -564,7 +564,7 @@ describe('FakeRequest', function() {
     request.respondWith({ status: 200, contentType: 'text/plain' });
 
     expect(request.getResponseHeader('content-type')).toBe('text/plain');
-    expect(request.getAllResponseHeaders()).toBe('Content-Type: text/plain');
+    expect(request.getAllResponseHeaders()).toBe("Content-Type: text/plain\r\n");
   });
 
   it('sets a default content-type header if no contentType and headers are supplied', function() {
@@ -575,7 +575,7 @@ describe('FakeRequest', function() {
     request.respondWith({ status: 200 });
 
     expect(request.getResponseHeader('content-type')).toBe('application/json');
-    expect(request.getAllResponseHeaders()).toBe('Content-Type: application/json');
+    expect(request.getAllResponseHeaders()).toBe("Content-Type: application/json\r\n");
   });
 
   it('has no responseXML by default', function() {

spec/mock-ajax-toplevel-spec.js

@@ -267,7 +267,7 @@ describe("Jasmine Mock Ajax (for toplevel)", function() {
           "X-Header1: header 1 value",
           "X-Header2: header 2 value",
           "X-Header3: header 3 value"
-        ].join("\r\n"));
+        ].join("\r\n") + "\r\n");
       });
     });
 
@@ -295,7 +295,7 @@ describe("Jasmine Mock Ajax (for toplevel)", function() {
         expect(response.getAllResponseHeaders()).toBe([
           "X-Header: header value 1",
           "X-Header: header value 2"
-        ].join("\r\n"));
+        ].join("\r\n") + "\r\n");
       });
     });
 

src/fakeRequest.js

@@ -212,7 +212,7 @@ getJasmineRequireObj().AjaxFakeRequest = function() {
           responseHeaders.push(this.responseHeaders[i].name + ': ' +
             this.responseHeaders[i].value);
         }
-        return responseHeaders.join('\r\n');
+        return responseHeaders.join('\r\n') + '\r\n';
       },
 
       responseText: null,