Add sizes to build.

Add sizes utility from Timezone. Display minified size during tests so
that they show up in Travis CI output.

Closes #22.
Closes #21.

build/sizes

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+declare -A b
+declare -A k
+
+printf "    %-24s %11s %11s %11s %11s\n" File Raw Min Zip Min/Zip
+for file in $@; do
+  b[raw]=$(cat $file | wc -c)
+  b[min]=$(cat $file | uglifyjs | wc -c)
+  alt=$(cat $file | uglifyjs --lift-vars | wc -c)
+  if [ $alt -lt ${b[min]} ]; then
+    b[min]=$alt
+  fi
+  b[zip]=$(cat $file | gzip -c  | wc -c)
+  b[minzip]=$(cat $file | uglifyjs | gzip -c | wc -c)
+  alt=$(cat $file | uglifyjs --lift-vars | gzip -c | wc -c)
+  if [ $alt -lt ${b[minzip]} ]; then
+    b[minzip]=$alt
+  fi
+  for field in raw min zip minzip; do
+    k[$field]=$(echo "${b[$field]} / 1024" | bc -l)
+  done
+  printf "    %-24s" $file
+  for field in raw min zip minzip; do
+    printf "%6d/%05.2f" ${b[$field]} ${k[$field]}
+  done
+  printf "\n"
+done

build/test

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+set -e
+
+if [ "$TRAVIS" = "true" ]; then
+  sudo apt-get install -q -q bc 2> /dev/null > /dev/null && echo 'Installed `bc`.' && echo ''
+fi
+
+build/sizes index.js
+
+echo ""
+
+(proof run t/*/*.t | tee .proof.out | proof progress) || (proof errors < .proof.out) || exit 1
+
+if [ "$TRAVIS" = "true" ] || [ "$MINIFY" = "true" ]; then
+  echo ""
+  echo "minified"
+  echo ""
+  default=$(cat index.js | uglifyjs | gzip -c | wc -c)
+  lift=$(cat index.js | uglifyjs --lift-vars | gzip -c | wc -c)
+
+  bak=index-$(date +'%FT%T').js
+  mv index.js $bak
+  if [ $default -lt $lift ]; then
+    cat $bak | uglifyjs > index.js
+  else
+    cat $bak | uglifyjs --lift-vars > index.js
+  fi 
+
+  (proof run t/*/*.t | tee .proof.out | proof progress) || (proof errors < .proof.out) || exit 1
+fi

package.json

@@ -9,9 +9,10 @@
   }]
 , "homepage": "http://bigeasy.github.com/cadence"
 , "repository": "git://github.com/bigeasy/cadence.git"
-, "scripts" : { "test": "proof t/*/*.t" }
+, "scripts" : { "test": "build/test" }
 , "devDependencies":
   { "proof": "0.0.10"
+  , "uglify-js": ">=0"
   }
 , "dependencies": {}
 }