Revise doc and some scripts for demo.

demo/image_classification/train.sh

@@ -24,7 +24,7 @@ paddle train \
 --test_all_data_in_one_period=1 \
 --use_gpu=1 \
 --trainer_count=1 \
---num_passes=200 \
+--num_passes=300 \
 --save_dir=$output \
 2>&1 | tee $log
 

demo/sentiment/test.sh

@@ -17,7 +17,7 @@ set -e
 function get_best_pass() {
   cat $1  | grep -Pzo 'Test .*\n.*pass-.*' | \
   sed  -r 'N;s/Test.* classification_error_evaluator=([0-9]+\.[0-9]+).*\n.*pass-([0-9]+)/\1 \2/g' |\
-  sort | head -n 1
+  sort -n | head -n 1
 }
 
 log=train.log

doc/demo/quick_start/index_en.md

@@ -477,7 +477,7 @@ The scripts of data downloading, network configurations, and training scrips are
 <td class="left">Word embedding</td>
 <td class="left"> 15MB </td>
 <td class="left"> 8.484%</td>
-<td class="left">trainer_config.bow.py</td>
+<td class="left">trainer_config.emb.py</td>
 </tr>
 
 <tr>