Replace instances of "joshglendenning" with "isobit" following GitHub username change (#216)

README.md

@@ -44,7 +44,7 @@ If you need full functionality of any plugin, please use it directly with your p
 - [blade](https://github.com/jwalton512/vim-blade) (syntax, indent, ftplugin)
 - [c++11](https://github.com/octol/vim-cpp-enhanced-highlight) (syntax)
 - [c/c++](https://github.com/vim-jp/vim-cpp) (syntax)
-- [caddyfile](https://github.com/joshglendenning/vim-caddyfile) (syntax, indent, ftplugin)
+- [caddyfile](https://github.com/isobit/vim-caddyfile) (syntax, indent, ftplugin)
 - [cjsx](https://github.com/mtscout6/vim-cjsx) (syntax, ftplugin)
 - [clojure](https://github.com/guns/vim-clojure-static) (syntax, indent, autoload, ftplugin)
 - [coffee-script](https://github.com/kchmck/vim-coffee-script) (syntax, indent, compiler, autoload, ftplugin)

build

@@ -116,7 +116,7 @@ PACKS="
   blade:jwalton512/vim-blade
   c++11:octol/vim-cpp-enhanced-highlight
   c/c++:vim-jp/vim-cpp
-  caddyfile:joshglendenning/vim-caddyfile
+  caddyfile:isobit/vim-caddyfile
   cjsx:mtscout6/vim-cjsx
   clojure:guns/vim-clojure-static
   coffee-script:kchmck/vim-coffee-script

ftdetect/polyglot.vim

@@ -70,7 +70,7 @@ augroup filetypedetect
 augroup END
 
 augroup filetypedetect
-" caddyfile:joshglendenning/vim-caddyfile
+" caddyfile:isobit/vim-caddyfile
 au BufNewFile,BufRead Caddyfile set ft=caddyfile
 augroup END