diff --git a/.gitignore b/.gitignore
index 4c8bbf1..f3b4966 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,7 @@ CMakeLists.txt.user
*.mod.o
modules.order
.tmp_versions
+.idea
debian/anbox-modules-dkms.debhelper.log
debian/anbox-modules-dkms.substvars
diff --git a/README.md b/README.md
index b769b22..30219dc 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,8 @@ Untested but likely to work:
## Build from source
+### Requirements
+
To build the Anbox runtime itself there is nothing special to know. We're using
cmake as build system. A few build dependencies need to be present on your host
system:
@@ -136,6 +138,10 @@ $ sudo apt install build-essential cmake cmake-data debhelper dbus google-mock \
libproperties-cpp-dev libprotobuf-dev libsdl2-dev libsdl2-image-dev lxc-dev \
pkg-config protobuf-compiler
```
+We recommend Ubuntu 16.04 (xenial) with **GCC 5.x** as your build environment.
+
+
+### Build
Afterwards you can build Anbox with
diff --git a/android/.idea/.name b/android/.idea/.name
deleted file mode 100644
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--- a/android/.idea/.name
+++ /dev/null
@@ -1 +0,0 @@
-android
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diff --git a/android/.idea/android.iml b/android/.idea/android.iml
deleted file mode 100644
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diff --git a/android/.idea/compiler.xml b/android/.idea/compiler.xml
deleted file mode 100644
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diff --git a/android/.idea/copyright/profiles_settings.xml b/android/.idea/copyright/profiles_settings.xml
deleted file mode 100644
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--- a/android/.idea/copyright/profiles_settings.xml
+++ /dev/null
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deleted file mode 100644
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+++ /dev/null
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diff --git a/android/.idea/misc.xml b/android/.idea/misc.xml
deleted file mode 100644
index 187605a..0000000
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+++ /dev/null
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diff --git a/android/.idea/modules.xml b/android/.idea/modules.xml
deleted file mode 100644
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+++ /dev/null
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diff --git a/android/.idea/vcs.xml b/android/.idea/vcs.xml
deleted file mode 100644
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--- a/android/.idea/vcs.xml
+++ /dev/null
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diff --git a/android/.idea/workspace.xml b/android/.idea/workspace.xml
deleted file mode 100644
index 54b36f0..0000000
--- a/android/.idea/workspace.xml
+++ /dev/null
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\ No newline at end of file