diff --git a/.travis.yml b/.travis.yml
index 0970df9..b1b654b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,9 +12,35 @@ before_install:
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get update -qq; fi
 
 install:
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install -y cmake gcc-4.8 g++-4.8 clang golang; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export CXX="g++-4.8" CC="gcc-4.8" GOROOT="/usr/lib/go" GOPATH=$HOME/gocode PATH=$PATH:$GOPATH/bin; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install -y clang golang; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export CXX="g++-4.9" CC="gcc-4.9" GOROOT="/usr/lib/go" GOPATH=$HOME/gocode PATH=$PATH:$GOPATH/bin; fi
 
+addons:
+  apt:
+    sources:
+     # The Travis apt source whitelist can be found here:
+     #   https://github.com/travis-ci/apt-source-whitelist/blob/master/ubuntu.json
+     - ubuntu-toolchain-r-test  # for new libstdc++
+     - george-edison55-precise-backports # for a more recent version of cmake (3.2.3)
+    packages:
+     - cmake-data
+     - cmake
+     # 4.9 is the first version of GCC with good enough C++11 support to build
+     # ycmd.
+     - g++-4.9
+     - ninja-build
+     # Everything below is a Python build dep (though it depends on Python
+     # version). We need them because pyenv builds Python.
+     - libssl-dev
+     - zlib1g-dev
+     - libbz2-dev
+     - libreadline-dev
+     - libsqlite3-dev
+     - wget
+     - curl
+     - llvm
+     - libncurses5-dev
+     - libncursesw5-dev
 
 compiler:
   - gcc
diff --git a/install.sh b/install.sh
index 4c21fc9..72114ba 100755
--- a/install.sh
+++ b/install.sh
@@ -48,6 +48,10 @@ case $platform in
         echoo ">>> Install fonts for powerline ..."
         bash fonts/install-fonts.sh
         ;;
+    *)
+        echoo "暂不支持此系统，欲使用此配置，需要先解决依赖安装的问题，欢迎提pr。"
+        exit 1
+        ;;
 esac
 
 sudo bash install-plugins.sh init
diff --git a/vimrc b/vimrc
index ff0f191..d517b56 100644
--- a/vimrc
+++ b/vimrc
@@ -18,16 +18,13 @@ Plugin 'VundleVim/Vundle.vim'
 " async syntax checking plugin for Vim
 Plugin 'w0rp/ale'
 
-" auto check python use pep8
-Plugin 'nvie/vim-flake8'
-
 " Highlights trailing whitespace in red and provides
 Plugin 'bronson/vim-trailing-whitespace'
 
 " multiple selections
 Plugin 'terryma/vim-multiple-cursors'
 
-"" Colorthemes
+" Colorthemes
 Plugin 'altercation/vim-colors-solarized'
 Plugin 'jnurmine/Zenburn'
 Plugin 'flazz/vim-colorschemes'
@@ -63,7 +60,7 @@ Plugin 'elzr/vim-json'
 Plugin 'dyng/ctrlsf.vim'
 Plugin 'kylef/apiblueprint.vim'
 
-" a Git wrapper so awesome
+" A Git wrapper so awesome
 Plugin 'tpope/vim-fugitive'
 " A Vim plugin which shows a git diff in the gutter (sign column) and stages/undoes hunks.
 Plugin 'airblade/vim-gitgutter'
@@ -128,7 +125,7 @@ let g:ale_sign_column_always = 0 " 一般需要实时检查，默认关闭
 let g:ale_lint_on_save = 1 " save file auto check
 let g:ale_lint_on_text_changed = 0 " for ale_lint_on_save = 1
 let g:ale_lint_on_enter = 0 " for ale_lint_on_save = 1
-map <F6> :ALEToggle<CR>
+map <F6> :ALEToggle \| echo 'g:ale_enabled =' g:ale_enabled<CR>
 
 " YouCompleteMe settings
 let g:ycm_collect_identifiers_from_comments_and_strings = 0
@@ -188,7 +185,7 @@ EOF
 
 " Ctrl-j 切换到下方的分割窗口 - Ctrl-k 切换到上方的分割窗口 - Ctrl-l
 " 切换到右侧的分割窗口 - Ctrl-h 切换到左侧的分割窗口
-"split navigations
+" split navigations
 set splitbelow
 set splitright
 nnoremap <C-J> <C-W><C-J>
@@ -209,7 +206,7 @@ map <F5> :NERDTreeToggle<CR>
 " NERDTree settings
 " 是否显示隐藏文件
 let NERDTreeShowHidden=0
-" 忽略一下文件的显示
+" 忽略以下文件的显示
 let NERDTreeIgnore=['\.pyc','\~$','\.swp','__pycache__','\.git$','\.DS_Store']
 " NERDTree git 扩展
 let g:NERDTreeIndicatorMapCustom = {