message: updated README.md to include instructions for manually installing mongodb drivers on Fedora
diff: @@ -723,7 +723,8 @@ sudo yum update
  sudo yum install git gcc.x86_64 gcc-c++.x86_64 autoconf automake libtool make cmake.x86_64 \
  bzip2-devel.x86_64 openssl-devel.x86_64 gmp-devel.x86_64 \
  libstdc++-devel.x86_64 python3-devel.x86_64 libedit.x86_64 \
  - ncurses-devel.x86_64 swig.x86_64 gettext-devel.x86_64
  + mongodb.x86_64 mongodb-server.x86_64 ncurses-devel.x86_64 \
  + swig.x86_64 gettext-devel.x86_64
  ```
  @@ -739,6 +740,21 @@ cd boost_1_66_0/
  ./bootstrap.sh "--prefix=$BOOST_ROOT"
  ./b2 install
  ```
  +Install [mongo-cxx-driver (release/stable)](https://github.com/mongodb/mongo-cxx-driver):
  +
  +```bash
  +cd ~
  +curl -LO https://github.com/mongodb/mongo-c-driver/releases/download/1.9.3/mongo-c-driver-1.9.3.tar.gz
  +tar xf mongo-c-driver-1.9.3.tar.gz
  +cd mongo-c-driver-1.9.3
  +./configure --enable-ssl=openssl --disable-automatic-init-and-cleanup --prefix=/usr/local
  +make -j$( nproc )
  +sudo make install
  +git clone https://github.com/mongodb/mongo-cxx-driver.git --branch releases/stable --depth 1
  +cd mongo-cxx-driver/build
  +cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local ..
  +sudo make -j$( nproc )
  +```
  Install [secp256k1-zkp (Cryptonomex branch)](https://github.com/cryptonomex/secp256k1-zkp.git):
  @@ -798,7 +814,7 @@ source ~/.bash_profile
  source ~/.bash_profile
  ```
  -Install MongoDB C++ driver:
  +Install [mongo-cxx-driver (release/stable)](https://github.com/mongodb/mongo-cxx-driver):
  ```bash
  cd ~
  