Installation steps for Ubuntu 14.04 added

LINUXCOMPILE.md

@@ -3,7 +3,7 @@
 ### GNU Compiler
 ```
     # Ubuntu / Debian
-    sudo apt-get install libmicrohttpd-dev libssl-dev cmake build-essential libhwloc-dev
+    sudo apt install libmicrohttpd-dev libssl-dev cmake build-essential libhwloc-dev
     cmake .
     make install
 
@@ -23,6 +23,18 @@
     sudo scl enable devtoolset-4 bash
     cmake3 .
     make install
+
+    # Ubuntu 14.04
+    sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+    sudo apt update
+    sudo apt install gcc-5 g++-5 make
+    sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 1 --slave /usr/bin/g++ g++ /usr/bin/g++-5
+    curl -L http://www.cmake.org/files/v3.4/cmake-3.4.1.tar.gz | tar -xvzf - -C /tmp/
+    cd /tmp/cmake-3.4.1/ && ./configure && make && sudo make install && cd -
+    sudo update-alternatives --install /usr/bin/cmake cmake /usr/local/bin/cmake 1 --force
+    sudo apt install libmicrohttpd-dev libssl-dev libhwloc-dev
+    cmake .
+    make install
 ```
 
 - g++ version 5.1 or higher is required for full C++11 support. CMake release compile scripts, as well as CodeBlocks build environment for debug builds is included.