Update README.markdown

In my machine I got installed following packages:

`cat  ~/.m2/repository/android/android/maven-metadata-local.xml`

    <?xml version="1.0" encoding="UTF-8"?>
    <metadata>
      <groupId>android</groupId>
      <artifactId>android</artifactId>
      <versioning>
        <release>4.2.2_r2</release>
        <versions>
          <version>1.5_r4</version>
          <version>1.6_r3</version>
          <version>2.1_r3</version>
          <version>2.2_r3</version>
          <version>2.3.3_r2</version>
          <version>3.0_r2</version>
          <version>3.1_r3</version>
          <version>3.2_r1</version>
          <version>4.0_r3</version>
          <version>4.0.3_r3</version>
          <version>4.1.2_r4</version>
          <version>4.2.2_r2</version>
        </versions>
        <lastUpdated>20130618152101</lastUpdated>
      </versioning>
    </metadata>

So I'd recommend to use `4.2.2_r2` instead of `4.2_r2`
Adding wagon for WebDAV
Merge pull request #124 from shairontoledo/patch-1

Update README.markdown
Update README.markdown
Merge pull request #126 from kohsuke/master

Add Wagon WebDAV
Changed to jackrabbit wagon webdav
Added KK
Add Android 4.3
Merge pull request #127 from Shusshu/feature-api18

Add Android 4.3
Added support for v7 appcompat library
Updated README
Merge pull request #129 from woeye/master

Added support for v7 appcompat library
Fixed deploy configuration for v7 appcompat library.
Fix bug causing appcompat to not be able to deploy properly
artifactid fix + source fix
Merge pull request #130 from nemanjanedic/master

Fixed deploy configuration for v7 appcompat library.
added  Nemanja Nedic
Merge pull request #132 from yuvipanda/fix-typo-in-appcompat

Fix bug causing appcompat to not be able to deploy properly
Added Yuvi Panda
Merge pull request #133 from Shusshu/issue-appcompat

artifactid fix + source fix