Added doc for singleline text operation

db/docs/reference-galen-spec-language-guide.blogix

@@ -747,7 +747,11 @@ $$
 
 h3. Text operations
 
-Sometimes you don't want to check the text case sensitive. For this purpose you can rely on special text operations. At the moment only these operations are supported: *lowercase* and *uppercase*.
+Sometimes you don't want to check the text case sensitive. For this purpose you can rely on special text operations. At the moment only these operations are supported: 
+
+* @lowercase@ - changes all letters to lower case
+* @uppercase@ - changes all letters to upper case
+* @singleline@ - replaces all newline symbols with space
 
 $$ galen-specs
 greeting:
@@ -756,9 +760,11 @@ greeting:
     text lowercase ends "website!"
     text lowercase contains "to our cool"
     text lowercase matches "welcome .* to our cool website!"
+    text singleline is "welcome user@example.com to our cool website!"
 $$
 
 
+
 h2. CSS Properties
 
 By analogy of "text spec":#Text the @css@ spec allows you to test the value of a CSS property of a specific element. For instance you can check the @font-size@, @font-family@, @background-color@ or any other CSS property you want. Use it in a same way as @text@ property:

public/galen-highlight-v2.js

@@ -84,7 +84,7 @@ var GalenHighlightV2 = GalenHighlightV2 || {
         "edge", "width", "height", "image", "below", "component", 
         "centered", "text", "near", "partly", "horizontally", 
         "vertically", "all", "is", "starts", "ends", "contains", 
-        "matches", "uppercase", "lowercase", "inside", "on",
+        "matches", "uppercase", "lowercase", "singleline", "inside", "on",
         "css", "aligned", "right", "left", "top", "bottom", "absent", "visible",
         "right-of", "left-of", "above", "color-scheme",
         "count", "any", "to", "frame"