docs($location): add examples for some methods

Closes angular#9754

Author: shwei

src/ng/location.js

@@ -327,6 +327,13 @@ var locationPrototype = {
    * Return full url representation with all segments encoded according to rules specified in
    * [RFC 3986](http://www.ietf.org/rfc/rfc3986.txt).
    *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var absUrl = $location.absUrl();
+   * // => "http://example.com/#/some/path?foo=bar&baz=xoxo"
+   * ```
+   *
    * @return {string} full url
    */
   absUrl: locationGetter('$$absUrl'),
@@ -342,6 +349,13 @@ var locationPrototype = {
    *
    * Change path, search and hash, when called with parameter and return `$location`.
    *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var url = $location.url();
+   * // => "/some/path?foo=bar&baz=xoxo"
+   * ```
+   *
    * @param {string=} url New url without base prefix (e.g. `/path?a=b#hash`)
    * @return {string} url
    */
@@ -366,6 +380,13 @@ var locationPrototype = {
    *
    * Return protocol of current url.
    *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var protocol = $location.protocol();
+   * // => "http"
+   * ```
+   *
    * @return {string} protocol of current url
    */
   protocol: locationGetter('$$protocol'),
@@ -379,6 +400,13 @@ var locationPrototype = {
    *
    * Return host of current url.
    *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var host = $location.host();
+   * // => "example.com"
+   * ```
+   *
    * @return {string} host of current url.
    */
   host: locationGetter('$$host'),
@@ -392,6 +420,13 @@ var locationPrototype = {
    *
    * Return port of current url.
    *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var port = $location.port();
+   * // => 80
+   * ```
+   *
    * @return {Number} port
    */
   port: locationGetter('$$port'),
@@ -410,6 +445,13 @@ var locationPrototype = {
    * Note: Path should always begin with forward slash (/), this method will add the forward slash
    * if it is missing.
    *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var path = $location.path();
+   * // => "/some/path"
+   * ```
+   *
    * @param {(string|number)=} path New path
    * @return {string} path
    */
@@ -435,10 +477,9 @@ var locationPrototype = {
    * var searchObject = $location.search();
    * // => {foo: 'bar', baz: 'xoxo'}
    *
-   *
    * // set foo to 'yipee'
    * $location.search('foo', 'yipee');
-   * // => $location
+   * // $location.search() => {foo: 'yipee', baz: 'xoxo'}
    * ```
    *
    * @param {string|Object.<string>|Object.<Array.<string>>} search New search params - string or
@@ -508,6 +549,13 @@ var locationPrototype = {
    *
    * Change hash fragment when called with parameter and return `$location`.
    *
+   *
+   * ```js
+   * // given url http://example.com/some/path?foo=bar&baz=xoxo#hashValue
+   * var hash = $location.hash();
+   * // => "hashValue"
+   * ```
+   *
    * @param {(string|number)=} hash New hash fragment
    * @return {string} hash
    */