Update github upload script for ubuntu build

doc/build_ubuntu.md

-## Building Cesium for Ubuntu
+## Ubuntu Builds
 
-Ionic allow to build native unbuntu application. Using the `click` tool, and the Cordova `ubuntu` platform.
+Cesium can be build as desktop application for Ubuntu, or as App on Ubuntu phone. Such builds use cross-architecture [click targets](https://developer.ubuntu.com/en/phone/apps/sdk/tutorials/click-targets-and-device-kits/) and the specific Apache Cordova platform `ubuntu`.
 
 ## Install Ubuntu SDK 
 
 Source documentation [here](https://developer.ubuntu.com/en/phone/platform/sdk/installing-the-sdk/) and [here](https://cordova.apache.org/docs/en/latest/guide/platforms/ubuntu/index.html)
 
-Install SDK :
+Install the SDK :
 
 ```bash
 sudo add-apt-repository ppa:ubuntu-sdk-team/ppa
@@ -14,18 +14,18 @@ sudo apt update
 sudo apt install ubuntu-sdk
 ```
 
-Install "click" packaging and dev tools:
+Install "click" packaging tools:
 
 ```bash
 sudo apt-get install click cmake libicu-dev pkg-config devscripts qtbase5-dev qtchooser qtdeclarative5-dev qtfeedback5-dev qtlocation5-dev qtmultimedia5-dev qtpim5-dev libqt5sensors5-dev qtsystems5-dev 
 
 ```
-> ou alternativement (à tester) : 
+> Alternatively (not tested): 
 > `sudo click chroot -a armhf -f ubuntu-sdk-15.04 install cmake libicu-dev:armhf pkg-config qtbase5-dev:armhf qtchooser qtdeclarative5-dev:armhf qtfeedback5-dev:armhf qtlocation5-dev:armhf qtmultimedia5-dev:armhf qtpim5-dev:armhf libqt5sensors5-dev:armhf qtsystems5-dev:armhf`
 
 
 
-## Add Ubuntu platform to Ionic project
+## Add Ubuntu platform to the Ionic project
 
 ```bash
 cd cesium
@@ -34,32 +34,37 @@ ionic platform add ubuntu
 
 ## Running Ubuntu SDK IDE (optional)
  
-To be able to launch Ubuntu SDK IDE, make sure your user has the unix group 'lxd'. 
+To debug or configure the Ubuntu builds easily, you can use the Ubuntu SDK IDE.
  
-`sudo usermod -a -G lxd mon_user`
+```bash
+ubuntu-sdk-ide
+```
+
+> Note: Before launching the IDE, make sure your user has the unix group `lxd`. If not, simply execute this command:
+> `sudo usermod -a -G lxd mon_user`
 
-Then launch the command `ubuntu-sdk-ide &` 
 
 ## Build Debian package (.deb)
 
-Generate the `click` source code:
+1. Generate the `click` source code:
 
 ```bash
 cd cesium
 ionic build ubuntu --release
 ```
 
-Then build the DEB package:
+2. Then build the project:
  
 ```bash
-cd platforms/ubuntu/native/fr.duniter.cesium
+cd platforms/ubuntu/native/cesium
 debuild
 ```
 
-This should generate `.deb` and description files. 
-
-> This step requires a valid GPG key, to sign the `.deb` file.
+This should generate the `.deb` in directory `<cesium>/platforms/ubuntu/native`. 
 
+> This step will required a valid (and installed) GPG key, to sign the `.deb` file.
+> The key should match the `author` field of the file `<cesium>/config.xml`.
+> To be able to your own GPG key, change the author. 
 
 ### Testing on an Ubuntu phone
 

github.sh

@@ -56,7 +56,7 @@ case "$1" in
       curl -i -u $2 -H 'Content-Type: application/zip' -T $dirname/platforms/web/build/cesium-web-$current.zip $upload_url?name=cesium-v$current-web.zip
       curl -i -u $2 -H 'Content-Type: application/zip' -T $dirname/platforms/firefoxos/build/package.zip $upload_url?name=cesium-v$current-firefoxos.zip
       curl -i -u $2 -H 'Content-Type: application/vnd.android.package-archive' -T $dirname/platforms/android/build/outputs/apk/android-release.apk $upload_url?name=cesium-v$current-android.apk
-      curl -i -u $2 -H 'Content-Type: application/x-debian-package' -T $dirname/platforms/ubuntu/native/cesium_$current_amd64.deb $upload_url?name=cesium-v$current-ubuntu_x64.deb
+      curl -i -u $2 -H 'Content-Type: application/x-debian-package' -T $dirname/platforms/ubuntu/native/cesium_${current}_amd64.deb $upload_url?name=cesium-v${current}-ubuntu-amd64.deb
 
       echo "Successfully uploading files"
       release_url=`echo "$result" | grep -P "\"url\": \"[^\"]+"  | grep -oP "https://api.github.com/repos/[a-z0-9/.]+"`