Fixing install script to actually install library when requested (#88)

* Fixing install script to actually install library when requested.  Cleaning up unused code.

Removing unused arguments from install script.

Fixing weird whitespacing

* Fixing install script to install to correct location /opt/rocm, now creates symlink in /opt/rocm/lib

* Updates and corrections to README and install script

README.md

@@ -22,9 +22,12 @@ In addition, HC Direct Function call support needs to be present on your machine
 The root of this repository has a helper script 'install.sh' to build and install RCCL on Ubuntu with a single command.  It does not take a lot of options and hard-codes configuration that can be specified through invoking cmake directly, but it's a great way to get started quickly and can serve as an example of how to build/install.
 
 *  `./install.sh` -- builds library including unit tests
-*  `./install.sh -i` -- builds and installs the library to /opt/rocm/rccl
+*  `./install.sh -i` -- builds and installs the library to /opt/rocm/rccl; installation path can be changed with --prefix argument (see below.)
 *  `./install.sh -h` -- shows help
 *  `./install.sh -t` -- builds library including unit tests
+*  `./install.sh -r` -- runs unit tests (must be already built)
+*  `./install.sh -p` -- builds RCCL package
+*  `./install.sh --prefix` -- specify custom path to install RCCL to (default:/opt/rocm)
 
 ## Manual build
 #### To build the library :