buld instruction without QT

docs/build_notes_android.md

@@ -1,6 +1,8 @@
 Building on Android
 ===================
 
+There are two versions: with QT and without QT.
+
 Pre-requesties
 --------------
 
@@ -8,12 +10,12 @@ You need to install Android SDK, NDK  and QT with android support.
 
 - [SDK](https://developer.android.com/studio/index.html) (choose command line tools only)  
 - [NDK](https://developer.android.com/ndk/downloads/index.html)  
-- [QT](https://www.qt.io/download-open-source/). Choose one for your platform for android. For example QT 5.6 under Linux would be [this file](http://download.qt.io/official_releases/qt/5.6/5.6.1-1/qt-opensource-linux-x64-android-5.6.1-1.run  )
+- [QT](https://www.qt.io/download-open-source/).(for QT only) Choose one for your platform for android. For example QT 5.6 under Linux would be [this file](http://download.qt.io/official_releases/qt/5.6/5.6.1-1/qt-opensource-linux-x64-android-5.6.1-1.run  )
 
 You also need Java JDK and Ant.
 
-QT-Creator
-----------
+QT-Creator (for QT only)
+------------------------
 Open QT-creator that should be installed with QT.  
 Go to Settings/Anndroid and specify correct paths to SDK and NDK.
 If everything is correct you will see two set avaiable:  
@@ -30,11 +32,26 @@ git clone https://github.com/PurpleI2P/android-ifaddrs.git
 ```
 
 
-Building the app
-----------------
-- Open qt/i2pd_qt/i2pd_qt.pro in the QT-creator.  
-- Change line MAIN_PATH = /path/to/libraries to actual path where did you put the dependancies to.  
-- Select appropriate project (usually armeabi-v7a) and build.  
-- You will find an .apk file in android-build/bin folder.  
-
-
+Building the app with QT
+------------------------
+- Open qt/i2pd_qt/i2pd_qt.pro in the QT-creator   
+- Change line MAIN_PATH = /path/to/libraries to an actual path where you put the dependancies to  
+- Select appropriate project (usually armeabi-v7a) and build    
+- You will find an .apk file in android-build/bin folder    
+
+Building the app without QT
+---------------------------
+- Change line I2PD_LIBS_PATH in android/jni/Application.mk to an actual path where you put the dependancies to  
+- Run 'ndk-build -j4' from andorid folder  
+- Create or edit file 'local.properties'. Place 'sdk.dir=<path to SDK>' and 'ndk.dir=<path to NDK>'  
+- Run 'ant clean debug'
+
+Creating release .apk
+----------------------
+In order to create release .apk you must obtain a Java keystore file(.jks). Either you have in already, or you can generate it yourself using keytool, or from one of you existing well-know ceritificates. For example, i2pd release are signed with this [certificate](https://github.com/PurpleI2P/i2pd/blob/openssl/contrib/certificates/router/orignal_at_mail.i2p.crt).  
+Create file 'ant.propeties'  
+key.store=<path to keystore file>  
+key.alias=<alias name>  
+key.store.password=<keystore password>  
+key.alias.password=<alias password>  
+Run 'ant clean release'