Epub Reader 0.1.0 release

* release-0.1.0: (193 commits)
  Add README.md file
  Add licenses info file LICENSES
  Add Apache License v2.0 license file
  Add LICENSE file
  Remove unused ScanDirectoryService
  Version number settle down to 0.1.0
  Add visual feedback
  Use ViewStub in reading activity
  Use ViewStub instead of WebView in reading layout
  Add fragment_reading.xml layout file
  Add previous and next button drawable resources
  Fix first time reading a book show blank page probleam
  Cleanup: remove unused variables
  Remove unused preparation in onLoaderFinished
  Use Handler to scroll page when restoring
  Save last read info in onPause
  Load last link when restoring
  Get last read link and position in prepareReadingSession
  Implement author and publisher cols as optional
  Add comments about epub specification
  ...
Update versionName to 0.1.1 in manifest file

This is a hotfix branch aiming at adding Javadoc to the source code.
Update versionCode to 2 in manifest file

The rule to assign versionCode in AndroidManifest.xml file:
The first release on master branch has a versionCode of integer 1.
Every release on master branch will increase the versionCode by one.
Update version number to 0.1.1 in about activity

Change happens in strings_activity_about.xml.
Update version number in LICENSES file
Update version number to 0.1.1 in README.md
Add action rescan icons to m/h/xh/xxh dpi folder
Add strings_activity_booklist.xml file

This file contains string resources used by booklist activity.
Update strings.xml

Remove duplicate string entries used by booklist activity in
strings.xml, since they're in strings_activity_booklist.xml now.
Add action rescan to booklist activity action bar
Add rescan warning dialog strings to xml file
Handle action rescan in booklist onOptionsItemSelected

It shows a warning dialog to let the user decide if he wants to proceed.
If he does, then a Service will be started to do the rescanning.
Implement showRescanWarningDialog method

This method does the actual described in the previous commit.
Add ACTION_RESCAN IntentFilter to ProcessEpubFileService

It really sounds weird to let ProcessEpubFileService to handle rescan
action, but for now I just did this. Later I may rename this file, that
is rename the Service. Although this is not recommended, but I'm gonna
do it anyway, since the Service is not exported, and only booklist
activity starts it, I assume it won't be a very big problem.
Update epub Service to use ACTION intent filter

Now ProcessEpubFileService will hanle intent with ACTION_ADD_EPUB_FILE
and ACTION_RESCAN differently.
Implement addEpubFile method

This version of addEpubFile method does exactly the same as the old
ProcessEpubFileService onHandleIntent.
Change ACTION_ADD_EPUB_FILE to ACTION_ADD_EPUB

Just a rename, I change it because I think it's more appropriate.
Add ACTION_ADD_EPUB to Service intent filter

In manifest file, update Service intent filter to include
ACTION_ADD_EPUB.
Update booklist to start epub Service using ACTION_ADD_EPUB

Change the intent to start ProcessEpubFileService to an implicit intent
using ACTION_ADD_EPUB in onFilePick method.
Update ACTION_ADD_EPUB IntentFilter data mimetype

Filter mimetype 'application/epub+zip' in Service IntentFilter
ACTION_ADD_EPUB.
Since intent with ACTION_ADD_EPUB use intent data, it is necessary to
specify a data test(here I use mimeType to do this), otherwise the
filter result will be null. Since If you don't use a data filter, it
means no data should be included in the Intent.