message: Updated android build readme for ubuntu
diff: @@ -13,6 +13,25 @@ Supported architectures are arm, armv7, arm64, x86 and x86_64
  - If you want build the dependencies by yourself the instructions for that can be found [here](https://github.com/evernym/indy-android-dependencies)
  ## How to build.
  +- If on Ubuntu make sure you have these packages installed
  + ```
  + apt-get install -y \
  + pkg-config \
  + libssl-dev \
  + libgmp3-dev \
  + curl \
  + build-essential \
  + libsqlite3-dev \
  + cmake \
  + apt-transport-https \
  + ca-certificates \
  + wget \
  + devscripts \
  + libncursesw5-dev \
  + libzmq3-dev \
  + zip \
  + unzip \
  + jq
  - Run `indy-sdk/libindy/build-libindy-android.sh` to build libindy for arm, arm64 and x86
  - This generates the libindy zip file with each architecture in the indy-sdk/libindy
  - You can also set the `LIBINDY_VERSION` environment variable to append version number to generated zip file.
  