updated the project description

Author: rssdev10

README.md

@@ -1,14 +1,77 @@
 ruby4knime
 ==========
 
-Ruby scripting extension for [Knime](http://knime.org)
+## Intro
+Ruby scripting extension for [KNIME](http://knime.org)
 
 This is preliminary support of Ruby scripting language for Knime.
 
-Now realized Source (Ruby Generator) and Manipulator (Ruby Script) node types.
+Now realized following node types:
 * Ruby Generator allows to generate any string or numeric data. Or process any external sources using Ruby.
-* Ruby Script allows to process input DataTable into output.
+* Ruby Script allows to process input DataTable into output DataTable.
+* Ruby Script 2x2 allows to process 2 input DataTable into 2 output DataTable.
+* Ruby Snippet allows to process input DataTable into output DataTable by writing code only for one row processing.
 
 See [Ruby wrapper](RubyScript/rb/README.rdoc)
 
 [Download binary](https://drive.google.com/folderview?id=0Bwx0cbtdU5K6TklLRG90cm5HbFk)
+
+## Sample workflow
+[Download sample workflow](samples/KNIME_Ruby_Test.zip)
+
+This is simple workflow for ruby4knime testing only. It includes all realized node types.
+![Ruby test workflow](docs/pics/workflow.png)
+
+Now some details.
+
+Node 1 contains the following code:
+    1000.times do |i|
+      x = i * 0.1 / Math::PI
+      $outContainer << Cells.new.double(x).double(Math.sin(x)).double(Math.sin(x + Math::PI/3))
+    end
+
+Node 2 contains the following code:
+    $outContainer.rowKey = 100000 # generate table keys from this number
+    1000.times do |i|
+      x = i * 0.1 / Math::PI
+      $outContainer << Cells.new.double(x).double(Math.cos(x)).double(Math.cos(0.3*x))
+    end
+
+Node 3 contains the following code:
+    $inData0.each do |row|
+      $outContainer << (row << Cells.new.double(row[1].to_f-row[2].to_f))
+    end
+
+
+Node 4 contains the following code:
+    $inData0.each do |row|
+      $outContainer0 << row
+    end
+    $inData1.each do |row|
+      $outContainer1 << row
+    end
+
+Node 6 contains the following code:
+    Cells.new.
+      double(row[1].to_f).
+      double(row[2].to_f - row[4].to_f)
+
+
+Joiner (Node 5) generates following data:
+![joiner node 5](docs/pics/joiner.png)
+
+We can control results by line plots.
+
+Fragment of Line Plot (Node 10)
+![line plot 10](docs/pics/output_10.png)
+
+Fragment of Line Plot (Node 11)
+![line plot 11](docs/pics/output_11.png)
+
+Fragment of Line Plot (Node 12)
+![line plot 12](docs/pics/output_12.png)
+
+Fragment of Line Plot (Node 13)
+![line plot 13](docs/pics/output_13.png)
+
+You can combine these Ruby nodes in any combination with other KNIME nodes.