docs: Add BSD install script

docs/install.rst

@@ -2,7 +2,11 @@ Install Tendermint
 ==================
 
 The fastest and easiest way to install the ``tendermint`` binary
-is to run `this script <https://github.com/tendermint/tendermint/blob/develop/scripts/install_tendermint.sh>`__ on a fresh Ubuntu instance. Read the comments / instructions carefully (i.e., reset your terminal after running the script).
+is to run `this script <https://github.com/tendermint/tendermint/blob/develop/scripts/install/install_tendermint_ubuntu.sh>`__ on
+a fresh Ubuntu instance,
+or `this script <https://github.com/tendermint/tendermint/blob/develop/scripts/install/install_tendermint_bsd.sh>`__
+on a fresh FreeBSD instance. Read the comments / instructions carefully (i.e., reset your terminal after running the script,
+make sure your okay with the network connections being made).
 
 From Binary
 -----------

scripts/install/install_tendermint_bsd.sh

@@ -0,0 +1,54 @@
+#!/usr/bin/tcsh
+
+# XXX: this script is intended to be run from
+# a fresh Digital Ocean droplet with FreeBSD
+# Just run tcsh install_tendermint_bsd.sh
+
+# upon its completion, you must either reset
+# your terminal or run `source ~/.tcshrc`
+
+# This assumes your installing it through tcsh as root.
+# Change the relevant lines from tcsh to csh if your
+# installing as a different user, along with changing the
+# gopath.
+
+# change this to a specific release or branch
+set BRANCH=master
+
+sudo pkg update
+
+sudo pkg upgrade -y
+sudo pkg install -y gmake
+sudo pkg install -y git
+
+# get and unpack golang
+curl -O https://storage.googleapis.com/golang/go1.10.freebsd-amd64.tar.gz
+tar -xvf go1.10.freebsd-amd64.tar.gz
+
+# move go binary and add to path
+mv go /usr/local
+set path=($path /usr/local/go/bin)
+
+
+# create the go directory, set GOPATH, and put it on PATH
+mkdir go
+echo "setenv GOPATH /root/go" >> ~/.tcshrc
+setenv GOPATH /root/go
+echo "set path=($path $GOPATH/bin)" >> ~/.tcshrc
+
+source ~/.tcshrc
+
+# get the code and move into repo
+set REPO=github.com/tendermint/tendermint
+go get $REPO
+cd $GOPATH/src/$REPO
+
+# build & install master
+git checkout $BRANCH
+gmake get_tools
+gmake get_vendor_deps
+gmake install
+
+# the binary is located in $GOPATH/bin
+# run `source ~/.profile` or reset your terminal
+# to persist the changes