Update readme.

README.md

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 # ttnhabbridge
-Bridge between the-things-network and the habitat network, to receive telemetry from amateur balloons using LoRaWAN
+Bridge between TheThingsNetwork/Helium and the habitat network,
+to receive telemetry from amateur balloons using LoRaWAN
 
 See https://revspace.nl/TTNHABBridge for a more detailed description of this project.
 See https://travis-ci.org/bertrik/ttnhabbridge for the Travis CI status
 
 # Development environment
-I develop this on Windows 7, in Java 8 in Eclipse.
+I develop this on in Java 11 in Eclipse.
 
 Steps to install everything:
 * download a Java 11 JDK and put it in tools/jdk
 * download Eclipse and put in in the tools/eclipse directory (for example)
-* install the eclipse SVN plugin, using this update site: https://dl.bintray.com/subclipse/releases/subclipse/4.2.x/
 
 Steps to prepare the Eclipse environment:
 * open a command line to the checked out project, enter the 'ttnhabbridge' directory
 * type 'env.bat' to initialise the tool paths etc
-* enter directory gradle
 * type 'gradlew eclipse' and watch dependencies being downloaded from the internet
 * start Eclipse, using the 'workspace' directory as workspace
 * import sub-projects (ttnhabbridge, cayenne) into the workspace