Javascript bindings (#14)

* Initial version ready

- bindings are in `bindings/emscripten.cpp`
- minimal Javascript example is in `examples/ggwave-js`

* add npm package + add test-ggwave.js

* js : rename export name to "ggwave_factory"

* update to v0.1.5

* Update README.md

* npm : add npm-publish target

bindings/CMakeLists.txt

@@ -0,0 +1,60 @@
+if (EMSCRIPTEN)
+    add_subdirectory(javascript)
+
+    add_custom_command(
+        OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/javascript/publish.log
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/javascript/ggwave.js
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/javascript/package.json
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/javascript
+        COMMAND npm publish
+        COMMAND touch publish.log
+        COMMENT "Publishing npm module v${PROJECT_VERSION}"
+        VERBATIM
+        )
+
+    add_custom_target(npm-publish
+        DEPENDS javascript/publish.log
+        )
+endif()
+
+if (GGWAVE_SUPPORT_PYTHON)
+    file(GLOB_RECURSE GGWAVE_SOURCES "../include/*" "../src/*")
+
+    add_custom_command(
+        OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/python/ggwave.bycython.cpp
+        OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/python/ggwave
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/python/Makefile
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/python/ggwave.pyx
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/python/cggwave.pxd
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/python/setup.py
+        DEPENDS ${GGWAVE_SOURCES}
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/python
+        COMMAND make clean
+        COMMAND make
+        COMMENT "Compiling Python module"
+        VERBATIM
+        )
+
+    add_custom_target(ggwave-py ALL
+        DEPENDS python/ggwave.bycython.cpp
+        DEPENDS python/ggwave
+        )
+
+    add_custom_command(
+        OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/python/dist
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/python/Makefile
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/python/ggwave.pyx
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/python/cggwave.pxd
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/python/setup.py
+        DEPENDS ${GGWAVE_SOURCES}
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/python
+        COMMAND make publish
+        COMMENT "Publishing Python module v${PROJECT_VERSION}"
+        VERBATIM
+        )
+
+    add_custom_target(pypi-publish
+        DEPENDS python/dist
+        )
+endif()
+