Add FollowingUsersFragment. closed #14

add fragment.
add menu_icon.
add item in drawer list.
Display list of users that follow, closed #15

- add APIManager.
- add Fragment.
The display on the ActionBar icon and name of the user.
Retrieve and display information for a specific user, closed #18

- create UserInfoAPIManager.
- create UserInfoFragment.
Create Fragment and APIManager.

- Display and acquisition of articles posted for a specific user, closed #19
- Display and acquisition of articles in stock for a specific user,
  closed #20
Merge branch 'feature/add-following-user-page' into develop
Implementation of the display of information of the user who is to follow.

- Creating a ViewPager that displays the information of each specific user, closed #22
- Retrieve and display tags that follow a specific user, closed #21
Display and acquisition of articles with a particular tag, closed #17

- create TagActivity.
refactoring fragment and view.
Be seen user page of their own.

- Fix the layout of the user information. #23
Show article detail info.

- Fix the layout of the user information, closed #23
- Add user information in the article detail screen, closed #24
- Add the tag information in the article detail screen, closed #25
- View detailed information in the article NavigaitionDrawer detail screen, closed #26
Update versionCode and versionName.
Merge branch 'release/1.4.0'