Release 0.11.1

Remove README.md file from repository.

* hotfix-0.11.1:
  Change version number to 0.11.1 in about activity
  Change version number to 0.11.1 in LICENSES file
  Change versionCode to 5
  Change version number to 0.11.1
  Remove README.md from repository
Add file README.md
Version number settle down to 0.14.0
Change versionCode to 6 in manifest file
Change version number to 0.14.0 in about activity
Change version number to 0.14.0 in LICENSES file
Release 0.14.0

Implement feature:
- page history backward and forward navigation
- view images on current page using other applications installed on the
  device
- show progress bar when adding a book, this could happen when: adding a
  new book, rescanning, recovery from deletion

* release-0.14.0: (51 commits)
  Change version number to 0.14.0 in LICENSES file
  Change version number to 0.14.0 in about activity
  Change versionCode to 6 in manifest file
  Version number settle down to 0.14.0
  Add file README.md
  Remove unused anchor listener registration
  Rewrite shouldOverrideUrlLoading of WebViewClient
  Call ReadingControl.setUp in registerListeners
  Add setUp method in ReadingControl
  Rename SCHEME to FILE_SCHEME
  Override shouldOverrideUrlLoading
  Remove unused code in shouldOverrideUrlLoading
  Remove unused mHistoryStack<String>
  Call preparePageJumping in onPageFinished
  Set visibility of backForward buttons in onPageFinished
  Rewrite mBackwardButton onClickListener
  Implement mForwardButton onClickListener
  Set mForwardButton visibility to invisible
  Implement registerListeners in ReadingActivity
  Call registerListeners in onPageFinished
  ...
Merge branch 'release-0.14.0' into develop

* release-0.14.0:
  Change version number to 0.14.0 in LICENSES file
  Change version number to 0.14.0 in about activity
  Change versionCode to 6 in manifest file
  Version number settle down to 0.14.0
  Add file README.md
Add .gitignore file under root directory
Change version number to 0.14.1 in README.md
Change versionName to 0.14.1 in manifest file
Change versionCode to 7
Change version number in AboutActivity
Change version number to 0.14.1 in LICENSES file
Fix preparePageJumping crash

The crash is caused by url being empty when first time opening a book.
When url is empty, preparePageJumping should do nothing.
This commit fixes the problem.
Merge branch 'hotfix-0.14.1' into develop

* hotfix-0.14.1:
  Fix preparePageJumping crash
  Change version number to 0.14.1 in LICENSES file
  Change version number in AboutActivity
  Change versionCode to 7
  Change versionName to 0.14.1 in manifest file
  Change version number to 0.14.1 in README.md
  Add .gitignore file under root directory