Scripts: apollo.sh usage updated

apollo.sh

@@ -99,7 +99,27 @@ function build_test_and_lint() {
 }
 
 function _usage() {
-    warning "Usage: Not implemented yet"
+  echo -e "\n${RED}Usage${NO_COLOR}:
+  .${BOLD}/apollo.sh${NO_COLOR} [OPTION]"
+  echo -e "\n${RED}Options${NO_COLOR}:
+  ${BLUE}config [options]${NO_COLOR}: config bazel build environment either non-interactively (default) or interactively.
+  ${BLUE}build [module]${NO_COLOR}: run build for cyber (<module> = cyber) or modules/<module>.  If <module> not specified, build all.
+  ${BLUE}build_dbg [module]${NO_COLOR}: run debug build (default).
+  ${BLUE}build_opt [module]${NO_COLOR}: run optimized build.
+  ${BLUE}build_cpu [module]${NO_COLOR}: build in CPU mode. Equivalent to 'bazel build --config=cpu'
+  ${BLUE}build_gpu [module]${NO_COLOR}: run build in GPU mode. Equivalent to 'bazel build --config=gpu'
+  ${BLUE}build_opt_gpu [module]${NO_COLOR}: optimized build in GPU mode. Equivalent to 'bazel build --config=opt --config=gpu'
+  ${BLUE}test [module]${NO_COLOR}: run unit tests for cyber (<module> = cyber) or modules/<module>. If <module> not specified, unit test all.
+  ${BLUE}lint${NO_COLOR}: run code style check
+  ${BLUE}buildify${NO_COLOR}: run 'buildifier' to fix style of bazel files
+  ${BLUE}check${NO_COLOR}: run build, test and lint on all modules. Make sure check pass before checking in new code
+  ${BLUE}build_fe${NO_COLOR}: compile dreamland frontend javascript. Requires all the node_modules installed already
+  ${BLUE}build_teleop${NO_COLOR}: run build with teleop enabled.
+  ${BLUE}build_prof [module]${NO_COLOR}: build with perf profiling support. Not implemented yet.
+  ${BLUE}doc${NO_COLOR}: generate doxygen document
+  ${BLUE}clean${NO_COLOR}: cleanup, including 'bazel clean --async'.
+  ${BLUE}usage${NO_COLOR}: show this message
+  "
 }
 
 function main() {

scripts/apollo.bashrc

@@ -35,6 +35,7 @@ export TAB="    " # 4 spaces
 
 BOLD='\033[1m'
 RED='\033[0;31m'
+BLUE='\033[0;34m'
 GREEN='\033[32m'
 WHITE='\033[34m'
 YELLOW='\033[33m'