add examples directory and first example

examples/OpenDocumentAndExtractWords.cs

@@ -0,0 +1,55 @@
+namespace UglyToad.Examples
+{
+    using System;
+    using System.Text;
+    using PdfPig;
+    using PdfPig.Content;
+
+    public static class OpenDocumentAndExtractWords
+    {
+        public static void Run(string filePath)
+        {
+            var sb = new StringBuilder();
+
+            using (var document = PdfDocument.Open(filePath))
+            {
+                Word previous = null;
+                foreach (var page in document.GetPages())
+                {
+                    foreach (var word in page.GetWords())
+                    {
+                        if (previous != null)
+                        {
+                            var hasInsertedWhitespace = false;
+                            var bothNonEmpty = previous.Letters.Count > 0 && word.Letters.Count > 0;
+                            if (bothNonEmpty)
+                            {
+                                var prevLetter1 = previous.Letters[0];
+                                var currentLetter1 = word.Letters[0];
+
+                                var baselineGap = Math.Abs(prevLetter1.StartBaseLine.Y - currentLetter1.StartBaseLine.Y);
+
+                                if (baselineGap > 3)
+                                {
+                                    hasInsertedWhitespace = true;
+                                    sb.AppendLine();
+                                }
+                            }
+
+                            if (!hasInsertedWhitespace)
+                            {
+                                sb.Append(" ");
+                            }
+                        }
+
+                        sb.Append(word.Text);
+
+                        previous = word;
+                    }
+                }
+            }
+
+            Console.WriteLine(sb.ToString());
+        }
+    }
+}