docs(INSTALL): update compiling instructions for Linux

Also change links from irungentoo/toxcore to TokTok/toxcore

INSTALL.md

@@ -119,12 +119,11 @@ sudo ldconfig
 
 ##### Compile toxcore
 
-Then clone this repo, generate makefile, and install `toxcore` system-wide:
+Then clone this repo, run `cmake`, and install `toxcore` system-wide:
 ```bash
-git clone https://github.com/irungentoo/toxcore.git
+git clone https://github.com/TokTok/toxcore.git
 cd toxcore
-autoreconf -i
-./configure
+cmake .
 make
 sudo make install
 ```
@@ -153,7 +152,7 @@ brew install libtool automake autoconf libsodium check
 ```
 Then clone this repo and generate makefile:
 ```bash
-git clone https://github.com/irungentoo/toxcore.git
+git clone https://github.com/TokTok/toxcore.git
 cd toxcore
 autoreconf -i
 ./configure
@@ -405,7 +404,7 @@ cd ..
 
 And finally we will build Tox:
 ```bash
-git clone https://github.com/irungentoo/toxcore
+git clone https://github.com/TokTok/toxcore
 cd toxcore
 ./autogen.sh
 ./configure --host="$WINDOWS_TOOLCHAIN" --prefix="$PREFIX_DIR" --disable-ntox --disable-tests --disable-testing --with-dependency-search="$PREFIX_DIR" --disable-shared --enable-static
@@ -462,7 +461,7 @@ cd ..
 
 You can also use a precompiled win32 binary of libsodium, however you will have to place the files in places where they can be found, i.e., dll's go to /bin headers to /include and libraries to /lib directories in your MinGW shell.
 
-Next, install toxcore library, should either clone this repo by using git, or just download a [zip of current Master branch](https://github.com/irungentoo/toxcore/archive/master.zip) and extract it somewhere.
+Next, install toxcore library, should either clone this repo by using git, or just download a [zip of current Master branch](https://github.com/TokTok/toxcore/archive/master.zip) and extract it somewhere.
 
 Assuming that you now have the sources in the toxcore directory: