toolchain: update the readme to reflect the new instructions

README.rst

@@ -1,33 +1,90 @@
 Kivy for IOS
 ============
 
-(This is a work in progress.)
+This toolchain is designed to compile the necessary library for iOS to run your
+application, and manage the creation of the Xcode project.
 
+Currently, we do not provide any binary distribution of this toolchain, but we
+aim to do it. So you do need to compile it at least one time before being about
+to create your Xcode project.
+
+The toolchain supports:
+
+- iPhone Simulator (x86 and x86_64)
+- iPhone / iOS (armv7 and arm64)
+
+
+Requirements
+------------
+
+Currently, the toolchain requires few tools to let you compile. You need:
+
+#. Xcode 6, with iOS SDK installed / command line tools.
 #. Using brew, you can install dependencies::
 
-    brew install autoconf automake libtool pkg-config mercurial
+    brew install autoconf automake libtool pkg-config
     brew link libtool
-    brew link mercurial
 
-#. Install Cython::
-
-    # easy-install method
-    sudo easy_install cython
+#. Install Cython (0.21)::
 
     # pip method if available (sudo might be needed.)
-    pip install cython
+    pip install cython==0.21
 
-#. Build the whole toolchain with `tools/build-all.sh`
-#. Create an Xcode project for your application with `tools/create-xcode-project.sh test /path/to/app`
-#. Open your newly created Xcode project
-#. Ensure code signing is setup correctly
-#. Click on play
 
-Notes
------
+Using the toolchain
+-------------------
+
+Any Python extensions or C/C++ library must be compiled: you need to have what
+we call a `recipe` to compile it. For example, Python, libffi, SDL2, SDL_image,
+freetype... all the dependencies, compilation and packaging instructions are
+contained in a `recipe`.
+
+You can list the available recipes and the version with::
+
+    $ ./toolchain.py recipes
+    freetype     2.5.5
+    hostpython   2.7.1
+    ios          master
+    kivy         ios-poly-arch
+    libffi       3.2.1
+    pyobjus      master
+    python       2.7.1
+    sdl2         iOS-improvements
+    sdl2_image   2.0.0
+    sdl2_mixer   2.0.0
+    sdl2_ttf     2.0.12
+
+Then, starts the compilation with::
+
+    $ ./toolchain.py build kivy
+
+The Kivy recipe depends on severals one, like all the sdl* and python. sdl2_ttf
+depends on freetype, etc. You can think as: it will compile everything
+necessary for a minimal working version of Kivy.
+
+Don't grab a coffee, just do diner. Compiling all the things the first time, 4x
+(remember, 4 archs, 2 per platforms), it will take time. (todo: provide a way
+to not compile for the simulator.).
+
+Create the Xcode project
+------------------------
+
+The `toolchain.py` can create for you the initial Xcode project::
+
+    $ # ./toolchain.py create <title> <app_directory>
+    $ ./toolchain.py create Touchtracer ~/code/kivy/examples/demo/touchtracer
+
+Your app directory must contain a main.py. A directory named `<title>-ios`
+will be created, with an Xcode project in it.
+You can open the Xcode project::
+
+    $ open touchtracer-ios/touchtracer.xcodeproj
+
+Then click on `Play`, and enjoy.
+
+.. notes::
+
+    Everytime you press `Play`, your application directory will be synced to
+    the `<title>-ios/YourApp` directory. Don't make changes in the -ios
+    directory directly.
 
-A build phase is added to the project that processes and moves your
-app's files to the Xcode project before every build. If you would like
-to handle this process manually, remove the "Run Script" build phase
-from your target and use `tools/populate-project.sh /path/to/app`
-after every change. You can also change the path to your app by modifying this build phase.