Update news, docs, bump version

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: regexplain
 Title: Rstudio Addin to Explain, Test and Build Regular Expressions
-Version: 0.1.3.9000
-Date: 2018-03-07
+Version: 0.1.4
+Date: 2018-03-14
 Authors@R: c(
     person("Garrick", "Aden-Buie", email = "g.adenbuie@gmail.com", role = c("aut", "cre")),
     person("Winston", "Chang", role = c("ctb"), comment = "Author of textInput and textAreaInput fragments from shiny"),

NEWS.md

@@ -0,0 +1,7 @@
+# regexplain 0.1.4
+
+* Added string substitution function to **Output** tab (`g?sub`, 
+  `str_replace(_all)?`) with replacement field
+* `view_regex()` output now differentiates between capture and non-capture groups
+* Fix typos (thanks @katrinleinweber) and tweak styles
+* Added a `NEWS.md` file to track changes to the package.

Readme.Rmd

@@ -48,7 +48,7 @@ The addin will open an interface with 4 panes where you can
 
 - edit the **text** you've imported
 - build up a **regex** expression and interactively see it applied to your text
-- test the **output** of common string matching functions from `base` and `stringr`
+- test the **output** of common string matching and replacement functions from `base` and `stringr`
 - and refer to a **help**ful cheatsheet
 
 ![The panes of regexplain](docs/regexplain-gadget-tabs.png)

Readme.md

@@ -50,8 +50,8 @@ The addin will open an interface with 4 panes where you can
   - edit the **text** you’ve imported
   - build up a **regex** expression and interactively see it applied to
     your text
-  - test the **output** of common string matching functions from `base`
-    and `stringr`
+  - test the **output** of common string matching and replacement
+    functions from `base` and `stringr`
   - and refer to a **help**ful cheatsheet
 
 ![The panes of regexplain](docs/regexplain-gadget-tabs.png)