Update README to take qhb_version in account

.gitignore

 /build/
+/.vscode
\ No newline at end of file

README.md

@@ -6,6 +6,7 @@ samples from the JASON Qualilife sound card developed by SMIoT.
 
 Prerequisites
 -------------
+
 To build and run the application, you will need:
 
 * a C++ compiler supporting C++11 (e.g., g++ 4.8.1 and above)
@@ -13,16 +14,20 @@ To build and run the application, you will need:
 * CMake 3.1 or above (optional)
 
 On a debian-based Linux system, these can be installed with:
+
 ```
 sudo apt install g++ libusb-1.0-0-dev cmake
 ```
 
 Compilation / Installation
 --------------------------
+
 Clone the repository somewhere or download and extract it.
 
 ### Using CMake
+
 If cmake is available, create a build directory, compile, and install:
+
 ```
 mkdir build
 cd build
@@ -30,27 +35,32 @@ cmake .. -DCMAKE_BUILD_TYPE=Release
 make
 sudo make install/strip
 ```
+
 This will install globally; pass `-DCMAKE_INSTALL_PREFIX=/some/directory` to
 the `cmake` call to install to `/some/directory` instead. It is also possible
 to run the compiled application from the `src` subdirectory of the `build`
 directory, skipping installation altogether.
 
 ### Without CMake
+
 If cmake is not available, you can still try to compile it manually. Just make
 sure to link against `libusb`. For `g++`, an example `Makefile` is included in
 the `src` directory, so the following may work:
+
 ```
 cd src
 make
 ```
 
 ### Under Windows
+
 As for any other platform, there are multiple options on Windows. The following
 has been tested successfully: Install CMake using the MSI installer from
 https://cmake.org, install the Microsoft Visual Studio Build Tools from
 https://aka.ms/buildtools (specifically, the C++ compiler), download and extract
 the precompiled Windows binaries from https://libusb.info. Open the x64 Native
 Tools Command Prompt and navigate to the source directory. Run the following:
+
 ```
 mkdir build
 mkdir install
@@ -59,21 +69,24 @@ cmake .. -DCMAKE_BUILD_TYPE=Release -DLIBUSB_INCLUDE_DIR=<libusb_dir>/include -D
 nmake
 nmake install
 ```
+
 Replace `<libusb_dir>` with the path you extracted libusb to. If compilation and
 installation succeeded, you will find a `jasonrec.exe` in `install/bin`. Copy
 the `MS64/dll/libusb-1.0.dll` file from the libusb directory into `install/bin`.
 You can now run `jasonrec.exe` from a command prompt, or by creating a shortcut
 to it that includes suitable command line options.
 
-
 Usage
 -----
+
 Running `jasonrec` without any arguments (or with any unsupported number of
 arguments, in fact) will display information on its usage:
+
 ```
 SMIoT JASON Qualilife sound recorder v1.3
-Usage:jasonrec channels rate filename [--help, -h] [--chunk_len, -c CHUNK_LEN] [--total_len, -t TOTAL_LEN] [--device, -d DEVICE] [--bit_depth, -b BIT_DEPTH] [--imu, -i IMU] [--filter, -f FILTER] [--verbose, -v]
+Usage:jasonrec qhb_version channels rate filename [--help, -h] [--chunk_len, -c CHUNK_LEN] [--total_len, -t TOTAL_LEN] [--device, -d DEVICE] [--bit_depth, -b BIT_DEPTH] [--imu, -i IMU] [--filter, -f FILTER] [--verbose, -v]
 Positional arguments:
+  QHB_VERSION: version of the qhb card used (currently supports version 2 to 3 included)
   CHANNELS:	number of channels to record (1 to 5)
   RATE:	sample rate in Hz to record at (integral number)
   FILENAME:	output file name. should include strftime() format specifiers
@@ -93,19 +106,24 @@ Optional arguments:
 ```
 
 As an example, to record a single 30-minute file of 2 channels at 16 kHz, run:
+
 ```
 jasonrec 2 16000 recording.wav -t 1800
 ```
 
 To record 4 channels at 128 kHz sample rate in 5-minute chunks with filenames
 based on time stamps, without stopping, run:
+
 ```
 jasonrec 4 128000 %Y-%m-%d_%H-%M-%S.wav -c 300
 ```
+
 To record the same 4 channels at 128 kHz sample rate in 5-minute chunks with filenames
 based on time stamps, without stopping, but with the saving of the imu data run:
+
 ```
 jasonrec 4 128000 %Y-%m-%d_%H-%M-%S.wav -c 300 -i  %Y-%m-%d_%H-%M-%S.csv
 ```
+
 File names may also include directory names based on time stamps, but the
 directories have to be created in advance.