Added support for unicode characters

E.g. /\u0123/.examples

README.md

@@ -23,6 +23,7 @@ or a huge number of possible matches, such as `/.\w/`, then only a subset of the
   # 'http://www.github.com', 'https://github.com', 'https://www.github.com']
 /(I(N(C(E(P(T(I(O(N)))))))))*/.examples #=> ["", "INCEPTION", "INCEPTIONINCEPTION"]
 /\x74\x68\x69\x73/.examples #=> ["this"]
+/\u6829/.examples #=> ["栩"]
 /what about (backreferences\?) \1/.examples #=> ['what about backreferences? backreferences?']
 ```
 
@@ -39,6 +40,7 @@ or a huge number of possible matches, such as `/.\w/`, then only a subset of the
   * Groups work fine, even if nested! e.g. `/(even(this(works?))) \1 \2 \3/`
 * Control characters, e.g. `/\ca/`, `/\cZ/`, `/\C-9/`
 * Escape sequences, e.g. `/\x42/`, `/\x3D/`, `/\5word/`, `/#{"\x80".force_encoding("ASCII-8BIT")}/`
+* Unicode characters, e.g. `/\u0123/`, `/\uabcd/`
 * **Arbitrarily complex combinations of all the above!**
 
 ## Not-Yet-Supported syntax
@@ -48,7 +50,6 @@ I plan to add the following features to the gem, but have not yet got round to i
 * Throw exceptions if illegal syntax (see below) is used. This is currently only partially implemented (for lookarounds only).
 * POSIX bracket expressions, e.g. `/[[:alnum:]]/`, `/[[:space:]]/`
 * Options, e.g. `/pattern/i`, `/foo.*bar/m`
-* Unicode characters, e.g. `/\u06E9/`
 * Named properties, e.g. `/\p{L}/` ("Letter"), `/\p{Arabic}/` ("Arabic character"), `/\p{^Ll}/` ("Not a lowercase letter")
 * Subexpression calls, e.g. `/(?<name> ... \g<name>* )/` (Note: These could get _really_ ugly to implement, and may even be impossible, so I highly doubt it's worth the effort!)
 

coverage/.resultset.json

@@ -16,8 +16,8 @@
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+        290,
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@@ -38,28 +38,28 @@
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@@ -117,11 +117,11 @@
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@@ -192,28 +192,28 @@
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@@ -225,15 +225,15 @@
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@@ -253,14 +253,17 @@
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@@ -270,9 +273,9 @@
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@@ -336,7 +339,7 @@
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@@ -353,6 +356,10 @@
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@@ -377,11 +384,11 @@
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@@ -395,12 +402,12 @@
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+        1677,
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@@ -410,16 +417,16 @@
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@@ -538,12 +545,12 @@
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@@ -553,11 +560,11 @@
       "/home/tom/git/regexp-examples/spec/regexp-examples_spec.rb": [
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@@ -696,9 +703,18 @@
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     },
-    "timestamp": 1421511606
+    "timestamp": 1421512650
   }
 }