fix md markup

Author: rssdev10

README.md

@@ -20,58 +20,66 @@ See [Ruby wrapper](RubyScript/rb/README.rdoc)
 [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)
+![Ruby test workflow](doc/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
+```ruby
+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
-      $outContainer << Cells.new.double(x).double(Math.cos(x)).double(Math.cos(0.3*x))
-    end
+```ruby
+$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|
-      $outContainer << (row << Cells.new.double(row[1].to_f-row[2].to_f))
-    end
-
+```ruby
+$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|
-      $outContainer1 << row
-    end
+```ruby
+$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)
-
+```ruby
+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)
+![joiner node 5](doc/pics/joiner.png)
 
 We can control results by line plots.
 
 Fragment of Line Plot (Node 10)
-![line plot 10](docs/pics/output_10.png)
+![line plot 10](doc/pics/output_10.png)
 
 Fragment of Line Plot (Node 11)
-![line plot 11](docs/pics/output_11.png)
+![line plot 11](doc/pics/output_11.png)
 
 Fragment of Line Plot (Node 12)
-![line plot 12](docs/pics/output_12.png)
+![line plot 12](doc/pics/output_12.png)
 
 Fragment of Line Plot (Node 13)
-![line plot 13](docs/pics/output_13.png)
+![line plot 13](doc/pics/output_13.png)
 
 You can combine these Ruby nodes in any combination with other KNIME nodes.