add --disable-redis option to build.sh

build.sh

@@ -1,8 +1,33 @@
 #!/usr/bin/env bash
 set -e
 root=$(readlink -e $(dirname $0))
+
+tags=""
+
+help_text="usage: $0 [--disable-redis]"
+
+# check for help flags first
+for arg in $@ ; do
+    case $arg in
+        -h|--help)
+            echo $help_text
+            exit 0
+            ;;
+    esac
+done
+
+# check for build flags
+for arg in $@ ; do
+    case $arg in
+        "--disable-redis")
+            tags="$tags -tags disable_redis"
+            ;;
+    esac
+done
+
 cd $root
 export GOPATH=$root/go
 mkdir -p $GOPATH
-go get -v -u github.com/majestrate/srndv2
+go get -v -u $tags github.com/majestrate/srndv2
 cp -a $GOPATH/bin/srndv2 $root
+echo "Built"