distribute AcraWriter Android via maven

[vixentael]

• add necessary Android distribution tools, like gradle
• add build.gradle and Android manifest
• push acrawriter that depends on themis-android to bintray
• update example to use acrawriter from bintray
• add badge to Readme (updated docs will come with new release)

Usage:

build.gradle

repositories {
        // whatever you have here, add maven
        maven { url "https://dl.bintray.com/cossacklabs/maven/" }
}

app/build.gradle

dependencies {
     // ....
    implementation 'com.cossacklabs.com:acrawriter:1.0.1'
}

bintray
https://bintray.com/cossacklabs/maven/acrawriter#

[Lagovas]

lgtm

[storojs72]

Why do we use hardcoded public key here?

[vixentael]

it's example that illustrates a typical flow of mobile app: it gets public key from somewhere (via network request) in base64 encoding. to make this example work without inet connection, the key is hardcoded.

I believe for mobile devs it's more useful to see encoding-decoding and to understand that they can get this key from somewhere, than to use local keygen.