Add expanded usage information to commands

.gitignore

@@ -1,2 +1,3 @@
 .*.swp
+Gemfile.lock
 pkg

bin/ebooks

@@ -8,7 +8,12 @@ module Ebooks
   APP_PATH = Dir.pwd # XXX do some recursive thing instead
 
   def self.new(reponame)
-    usage = "Usage: ebooks new <reponame>"
+    usage = <<STR
+Usage: ebooks new <reponame>
+
+Creates a new skeleton repository defining a template bot in
+the current working directory specified by <reponame>.
+STR
 
     if reponame.nil?
       log usage
@@ -33,10 +38,21 @@ module Ebooks
   end
 
   def self.consume(pathes)
+    usage = <<STR
+Usage: ebooks consume <corpus_path> [corpus_path2] [...]
+
+Processes some number of text files or json tweet corpuses
+into usable models. These will be output at model/<name>.model
+STR
+
+    if pathes.empty?
+      log usage
+      exit
+    end
+
     pathes.each do |path|
       filename = File.basename(path)
       shortname = filename.split('.')[0..-2].join('.')
-      hash = Digest::MD5.hexdigest(File.read(path))
 
       outpath = File.join(APP_PATH, 'model', "#{shortname}.model")
       Model.consume(path).save(outpath)
@@ -45,6 +61,17 @@ module Ebooks
   end
 
   def self.gen(model_path, input)
+    usage = <<STR
+Usage: ebooks gen <model_path> [input]
+
+Make a test tweet from the processed model at <model_path>.
+Will respond to input if provided.
+STR
+    if model_path.nil?
+      log usage
+      exit
+    end
+
     model = Model.load(model_path)
     if input && !input.empty?
       puts "@cmd " + model.make_response(input, 135)
@@ -54,11 +81,35 @@ module Ebooks
   end
 
   def self.score(model_path, input)
+    usage = <<STR
+Usage: ebooks score <model_path> <input>
+
+Scores "interest" in some text input according to how
+well unique keywords match the model.
+STR
+    if model_path.nil? || input.nil?
+      log usage
+      exit
+    end
+
     model = Model.load(model_path)
     model.score_interest(input)
   end
 
   def self.archive(username, outpath)
+    usage = <<STR
+Usage: ebooks archive <username> <outpath>
+
+Downloads a json corpus of the <username>'s tweets to <outpath>.
+Due to API limitations, this can only receive up to ~3000 tweets
+into the past.
+STR
+
+    if username.nil? || outpath.nil?
+      log usage
+      exit
+    end
+
     Archive.new(username, outpath).sync
   end
 
@@ -73,6 +124,17 @@ module Ebooks
   end
 
   def self.jsonify(paths)
+    usage = <<STR
+Usage: ebooks jsonify <old_corpus_path> [old_corpus_path2] [...]
+
+Takes an old-style corpus of plain tweet text and converts it to json.
+STR
+
+    if paths.empty?
+      log usage
+      exit
+    end
+
     paths.each do |path|
       name = File.basename(path).split('.')[0]
       new_path = name + ".json"
@@ -102,12 +164,12 @@ module Ebooks
   def self.command(args)
     usage = """Usage: 
      ebooks new <reponame>
-     ebooks consume <corpus_path> [...]
+     ebooks consume <corpus_path> [corpus_path2] [...]
      ebooks gen <model_path> [input]
      ebooks score <model_path> <input>
      ebooks archive <@user> <outpath>
      ebooks tweet <model_path> <@bot>
-     ebooks jsonify <old_corpus_path> [...]
+     ebooks jsonify <old_corpus_path> [old_corpus_path2] [...]
 """
 
     if args.length == 0