added "$" in front of terminal commands

README.md

@@ -38,15 +38,15 @@ The client requires _FFmpeg_ and _LibSDL2_.
 #### Linux
 
 Install the required packages from your package manager (here, for Debian):
+```bash
+# runtime dependencies
+$ sudo apt install ffmpeg libsdl2-2.0.0
 
-    # runtime dependencies
-    sudo apt install ffmpeg libsdl2-2.0.0
-
-    # build dependencies
-    sudo apt install make gcc openjdk-8-jdk pkg-config meson zip \
-                     libavcodec-dev libavformat-dev libavutil-dev \
-                     libsdl2-dev
-
+# build dependencies
+$ sudo apt install make gcc openjdk-8-jdk pkg-config meson zip \
+                   libavcodec-dev libavformat-dev libavutil-dev \
+                   libsdl2-dev
+```
 
 #### Windows
 
@@ -64,41 +64,41 @@ Instead, you may want to build it manually. You need [MSYS2] to build the
 project. From an MSYS2 terminal, install the required packages:
 
 [MSYS2]: http://www.msys2.org/
-
-    # runtime dependencies
-    pacman -S mingw-w64-x86_64-SDL2 \
-              mingw-w64-x86_64-ffmpeg
-
-    # build dependencies
-    pacman -S mingw-w64-x86_64-make \
-              mingw-w64-x86_64-gcc \
-              mingw-w64-x86_64-pkg-config \
-              mingw-w64-x86_64-meson \
-              zip
-
+```bash
+# runtime dependencies
+$ pacman -S mingw-w64-x86_64-SDL2 \
+            mingw-w64-x86_64-ffmpeg
+
+# build dependencies
+$ pacman -S mingw-w64-x86_64-make \
+            mingw-w64-x86_64-gcc \
+            mingw-w64-x86_64-pkg-config \
+            mingw-w64-x86_64-meson \
+            zip
+```
 Java (>= 7) is not available in MSYS2, so if you plan to build the server,
 install it manually and make it available from the `PATH`:
-
-    export PATH="$JAVA_HOME/bin:$PATH"
-
+```bash
+$ export PATH="$JAVA_HOME/bin:$PATH"
+```
 
 #### Mac OS
 
 Use [Homebrew] to install the packages:
 
 [Homebrew]: https://brew.sh/
+```bash
+# runtime dependencies
+$ brew install sdl2 ffmpeg
 
-    # runtime dependencies
-    brew install sdl2 ffmpeg
-
-    # build dependencies
-    brew install gcc pkg-config meson zip
-
+# build dependencies
+$ brew install gcc pkg-config meson zip
+```
 Java (>= 7) is not available in Homebrew, so if you plan to build the server,
 install it manually and make it available from the `PATH`:
-
-    export PATH="$JAVA_HOME/bin:$PATH"
-
+```bash
+$ export PATH="$JAVA_HOME/bin:$PATH"
+```
 
 ### Common steps
 
@@ -106,23 +106,23 @@ Install the [Android SDK] (_Android Studio_), and set `ANDROID_HOME` to
 its directory. For example:
 
 [Android SDK]: https://developer.android.com/studio/index.html
-
-    export ANDROID_HOME=~/android/sdk
-
+```bash
+$ export ANDROID_HOME=~/android/sdk
+```
 Then, build `scrcpy`:
-
-    meson x --buildtype release --strip -Db_lto=true
-    cd x
-    ninja
-
+```bash
+$ meson x --buildtype release --strip -Db_lto=true
+$ cd x
+$ ninja
+```
 You can test it from here:
-
-    ninja run
-
+```bash
+$ ninja run
+```
 Or you can install it on the system:
-
-    sudo ninja install    # without sudo on Windows
-
+```bash
+$ sudo ninja install    # without sudo on Windows
+```
 This installs two files:
 
  - `/usr/local/bin/scrcpy`
@@ -146,43 +146,43 @@ In that case, the build does not require Java or the Android SDK.
 
 Download the prebuilt server somewhere, and specify its path during the Meson
 configuration:
-
-    meson x --buildtype release --strip -Db_lto=true \
-        -Dprebuilt_server=/path/to/scrcpy-server.jar
-    cd x
-    ninja
-    sudo ninja install
-
+```bash
+$ meson x --buildtype release --strip -Db_lto=true \
+      -Dprebuilt_server=/path/to/scrcpy-server.jar
+$ cd x
+$ ninja
+$ sudo ninja install
+```
 
 ## Run
 
 _At runtime, `adb` must be accessible from your `PATH`._
 
 If everything is ok, just plug an Android device, and execute:
-
-    scrcpy
-
+```bash
+$ scrcpy
+```
 It accepts command-line arguments, listed by:
-
-    scrcpy --help
-
+```bash
+$ scrcpy --help
+```
 For example, to decrease video bitrate to 2Mbps (default is 8Mbps):
-
-    scrcpy -b 2M
-
+```bash
+$ scrcpy -b 2M
+```
 To limit the video dimensions (e.g. if the device is 2540×1440, but the host
 screen is smaller, or cannot decode such a high definition):
-
-    scrcpy -m 1024
-
+```bash
+$ scrcpy -m 1024
+```
 If several devices are listed in `adb devices`, you must specify the _serial_:
-
-    scrcpy -s 0123456789abcdef
-
+```bash
+$ scrcpy -s 0123456789abcdef
+```
 To run without installing:
-
-    ./run x [options]
-
+```bash
+$ ./run x [options]
+```
 (where `x` is your build directory).